Answer: Hello!
Step-by-step explanation:
Your answer would be D :)
n order to test the null hypothesis of equal means (alternative hypothesis says they are unequal), two simple random samples are obtained.In sample 1, the mean and standard deviation are 10 and 6 respectively.In sample 2, the mean and standard deviation are 16 and 4 respectively.Each sample is of size 6.The data are normally distributed.The true standard deviations of the two populations may be assumed to be equal.What can you say about the P-value for the test of equal means? --> It must be
Complete Question
In order to test the null hypothesis of equal means (alternative hypothesis says they are unequal), two simple random samples are obtained.In sample 1, the mean and standard deviation are 10 and 6 respectively.In sample 2, the mean and standard deviation are 16 and 4 respectively.Each sample is of size 6.The data are normally distributed.The true standard deviations of the two populations may be assumed to be equal.What can you say about the P-value for the test of equal means? -->
It must be that the resulting P-value must be
A) Greater than 0.2
B) Between 0.19 and 0.10
C) Between 0.09 and .05
D) Between .049 and .02
E) Less than 0.02
Answer:
The correct option is B
Step-by-step explanation:
From the question we are told that
The mean of sample 1 is [tex]\= x_1 = 10[/tex]
The standard deviation is [tex]s_1 = 6[/tex]
The mean of sample two is [tex]\= x_2 = 16[/tex]
The standard deviation is [tex]s_2= 4[/tex]
The sample size for both samples is [tex]n_1 = n_2 = n = 6[/tex]
The null hypothesis is [tex]H_o : \mu_1 = \mu_2[/tex]
The alternative hypothesis is [tex]H_a : \mu_1 \ne \mu_2[/tex]
Generally the test statistics is mathematically represented as
[tex]z = \frac{ \= x_1 - \= x_2 }{ \sqrt{ \frac{s^2_1}{n_1} +\frac{s^2_1}{n_2} } }[/tex]
=> [tex]z = \frac{ 10 - 16 }{ \sqrt{ \frac{6^2}{6} +\frac{4^2}{6} } }[/tex]
=> [tex]z = -1.3646[/tex]
From the z table the area under the normal curve to the left corresponding to -1.3646 is
[tex]P(Z < -1.3646) = 0.086189[/tex]
Generally the p-value is mathematically represented as
[tex]p-value = 2 P(Z < -1.3646)[/tex]
=> [tex]p-value = 0.086189 * 2[/tex]
=> [tex]p-value = 0.1724[/tex]
So the p-value is Between 0.19 and 0.10
Find the x and y intercepts of the following equation. 3x - 8y = 24
PLEASE HELP ITS MULTIPLE CHOICE i’ll mark brainliest too!!
Step-by-step explanation:
For the left end of the function, it moves up towards positive infinity.
For the right end of the function, it movea down towarda negative infinity.
Therefore as x approaches -infinity, y approaches +infinity and as x approaches +infinity, y approaches negative infinity. (2nd option)
Aaron rolled a fair six-sided number cube, numbered 1 through 6, several times and recorded the data in the table below. Which statement about this situation is true? *
Answer:
Aaron rolled a fair six-sided number cube, numbered 1 through 6 is explained below in details.
Step-by-step explanation:
a. FALSE
Trial possibility of rolling a 6 =1/20 = 0.05
Logical possibility of rolling a 6 = 1/6 = 0.17(approximately.)
So the trial possibility of rolling a 6 is not equal to the logical possibility of rolling a 6.
b. FALSE
Trial possibility of rolling an even number = Trial possibility of rolling number 2,4 or 6 = 4/20+2/20+1/20= 7/20 = 0.35
Logical possibility of rolling an even number = 3/6 = 1/2=0.5
Therefore the Test possibility of rolling an even number is shorter than the logical possibility of the same.
c. TRUE
Trial possibility of rolling a 1= 6/20= 0.3
Logical possibility of rolling a 1= 1/6 = 0.17 (approx.)
So the Trial possibility of rolling a 1 is greater than the logical possibility of rolling a 1.
d. FALSE.
Trial possibility of rolling a 4= 2/20= 0.1
Logical possibility of rolling a 4 = 1/6 = 0.17 (approx.)
So the Trial possibility of rolling a 4 is less than the logical possibility of rolling a 4.
6. Determine the number of solutions for each of the equations below. Be sure to
justify your conclusions. *
(z – 8)2 = -1
A. one solution
B. infinitely many solutions
C.no solution
D. x = 9
Answer:
C. no solutionStep-by-step explanation:
Determine the number of solutions for each of the equations below. Be sure to
justify your conclusions. *
(z – 8)2 = -1
A. one solution
B. infinitely many solutions
C.no solution
D. x = 9
Given the expression;
(z – 8)^2 = -1
we are to find the nature of the solution;
Take the square root of both sides
(z – 8)^2 = -1
√(z – 8)^2 = √-1
z- 8 = √-1
Note that √-1 will give a complex number i to have;
z = 8 ± i
This therefore shows that the equation has no real solution.
liz has 9 buttons. kristen has b more buttons than liz choose the expression that shows how many buttons kristen has. A. b - 9. B. 9 + b. C. 9. D. 9 - b
Answer:
B. 9+b
Step-by-step explanation:
if b represents the number of buttons more than 9, then you just have to add 9 to that and you get your equation.
This explanation made better sense in my head...
Pls help with right answer
Answer: I believe B.
If not I apologize I haven't had to do this type of math in a while.
Answer:
B.Divide the numerator and denominator by 11
Think about using decimal models to show 6.84. If you only used tenths what place would you not be able to model? How many tenths would you use to model the other two places?
Step-by-step explanation:
plase see it i work by paper worksheet
13. Photography world has a portrait special. A
three-pose portrait package has a sitting fee of $35,
and a six-pose package has a sitting fee of $60. On a
Saturday, $690 was collected in sitting fees. Which
equation can be used to represent x, the number of
three-pose portrait packages, and y, the number of
six-pose portrait packages?
A. 360x + 105y = 690
B. 35x + 60y = 690
C. 60x + 35y = 690
D. 105x + 360y = -690
Answer:
35x + 60y = 690
Why:
We need to correct number to represent X (which is 35) and Y (which is 60).
And 35x + 60y = 690, 690 being the total, fits what we need to answer.
All of the other options display an incorrect number for the X and Y values.
Answer:
35x + 60y = 690
Step-by-step explanation:
Need help with 2 and 5 pleaseeee!!
Answer:
Question 2: √x
Question 5: B and D
Step-by-step explanation:
If you move a factor from the denominator to the numberator (or vice versa) its exponent must flip sign.
I.e., [tex]\frac{1}{x^{-1}}[/tex] will become [tex]\frac{x^1}{1}}[/tex] which is x
Multiplying the same number x you must add the exponents. (1/3)+(1/3)+(1/3) is 1, so D is also x¹.
Therefore B and D are equivalent.
helpppppp plssssssssssssss
Answer:
A. Cellular respiration
Step-by-step explanation:
Answer:
A is the answer :)
the reason for this is.... I'm not really sure xd
Need urgent help on this! my grade is falling :(
Answer:
the answer is b
Step-by-step explanation:
What is the value of x in the rhombus below?
O A. 28
O B. 56
O C. 58
O D. 24
Answer:
A. 28
Step-by-step explanation:
x = 28
Value of x in the rhombus is [tex]28^{0}[/tex].
What is rhombus?A rhombus can be defined as a special parallelogram as it fulfills the requirements of a parallelogram, i.e. a quadrilateral with two pairs of parallel sides. In addition to this, a rhombus has all four sides equal just like a square.
According to the question
DB, CA are diagonal line
So, <CAB + <DBA = [tex]90^{0}[/tex]
⇒ x + 6 + 2x = [tex]90^{0}[/tex]
⇒ 3x = 90 - 6
⇒ 3x = 84
⇒ x = [tex]\frac{84}{3}[/tex]
⇒ x = [tex]28^{0}[/tex]
Hence, value of x in the rhombus is [tex]28^{0}[/tex].
Find out more information about rhombus is [tex]28^{0}[/tex].
https://brainly.com/question/27870968
#SPJ3
Apply the distributive property to convert the expression to the greatest common factor multiplied by a term in parenthesis.
36a+9=
40+50d=
28-7f=
Answer:
9(4a+1)=
10(4+5d)=
7(4-f)=
Step-By-Step Solution:
The greatest common factor is the largest number that both numbers can be divided by. For example, in #1, 36 and 9 can both be divided by 9 to become 4 and 1.
Can you show me how you can get this answer step by step
Answer:
Plug in the values for x
Step-by-step explanation:
plug in x values into the equation
for example, plug -2 into the equation. y= -2(-2). y=4
So on and so forth
Order the set of numbers from least to greatest. {63, -34, 36, -27, -13, and 12}
Answer:
-34, -27, -13, 12, 36, 64.
Step-by-step explanation:
The further left you go on a number line the less the number is the further right you go the greater the number is. Hope this helped!! Give brainliest.
5. What are the dimensions of this matrix?
Please help meeeeeeeeeee
Answer:
4 x 1
Step-by-step explanation:
The matrix shown in the illustration has 4 rows and 1 column, and thus we give the dimensions as 4 x 1.
ALMOST DONE MORE HELP MORE POINTS
Answer: I’ll try my best, I believe the ansr is B
Step-by-step explanation:
IF THIS ISNT RIGHT IM SO VERY SRRY!
Answer:
The answer is either C or B. I really tried my best and I hope you get it right! :)
Have a nice day! :) :)
Helpppppppppppppppppppoppppppoo
Answer:
Step-by-step explanation:
abc=80, abm= 100
acb= 40, acn= 140
angle a = 60
x=80, y=40
Answer:
x = 80° y = 40°
Step-by-step explanation:
ABC = 80° ACB = 40°
ABC+ACB+A = 180° (sum of angles in a triangle = 180°)
80+40+A = 180°
A = 60° (sum of angles in a triangle = 180°)
X = 80° (ALTERNATE ANGLES, angles x is alternate to angle ABC = 80° )
y = 40° (alternate angles, angle y is alternate to angle ACB = 40°)
to cross-check : sum of angles on a straight line = 180°
x+ y + A = 180sum of angles on a straight line = 180°
80+40+60 = 180°
ABM = 100° = (sum of angles on a straight line = 180°)
80° + 100° = 180°
ACN = 140° (sum of angles on a straight line = 180°)
40° + 140° = 180°
Write the equation of the line in fully simplified slope-intercept form.
Step-by-step explanation:
For every 3 squares across, the line drops by 1 square.
Therefore the slope of the lina is -1/3.
The y-intercept of the line is -8 (when x = 0)
The equation of the line is y = -1/3 x - 8.
the average of nadine's six test is 77. The scores on the five of the test are 88,65,75,83 and 90. what is the score on the remaining test?
A. 91
B. 81
C. 71
D. 61
Answer:
The score on the remaining test is x = 61
Hence, option D is correct.
Step-by-step explanation:
Let 'x' be the score of the remaining test
The average score of Nadine's six tests = 77
so
Average score = (88+65+75+83+90+x) / 6
substituting average score = 77 in the equation to find 'x'
77 = (401 + x) / 6
401 + x = 77 × 6
x = 462 - 401
x = 61
Therefore, the score on the remaining test is x = 61
Hence, option D is correct.
The length of a box as reported by its manufacturer is 13.67 cm. Joe has a ruler which has markings for each millimeter. Which most likely represents the length of the box that Joe is able to measure?
Answer:
Option (3)
Step-by-step explanation:
Joe has a ruler which has markings for each millimeter, so the least measurement which Joe can do is in millimeter.
Since, 10 mm = 1 cm
Therefore, 1 mm = 0.1 cm
This rule states that Joe can measure a length or distance in nearest tenth of a cm only.
If length of a box = 13.67 cm,
So Joe can measure it as 13.7 cm approximately.
Therefore, Option (3) will be the answer.
b) The ratio 3:5 can be written in the form 1:n
Choose n from the following.
a 5/3
b 1/5
c 3/5
d 1/3
Answer:
Answer: a 5/3
Step-by-step explanation:
Ratios as Fractions
The ratio 3:5 can be expressed as the fraction
[tex]\frac{3}{5}[/tex]
If we wanted to express the ratio in the form 1:n, we can manipulate the fraction in such a way that it has the number 1 in the numerator.
Dividing numerator and denominator by 3:
[tex]\displaystyle \frac{\frac{3}{3}}{\frac{5}{3}}[/tex]
Simplifying:
[tex]\displaystyle \frac{1}{\frac{5}{3}}[/tex]
Thus, the fraction represents the ratio:
[tex]1:(\frac{5}{3})[/tex]
[tex]Thus, n=\frac{5}{3}[/tex]
Answer: a 5/3
What is the answer to this
Answer:
x = - 1
Step-by-step explanation:
Given
- 5x - 16 = 9x + x - 1, that is
- 5x - 16 = 10x - 1 ( subtract 10x from both sides )
- 15x - 16 = - 1 ( add 16 to both sides )
- 15x = 15 ( divide both sides by - 15 )
x = - 1
Solve for b .
-9 b = 27
b =
Final Answer: [tex]b = -3[/tex]
Steps/Reasons/Explanation:
Question: Solve for [tex]b[/tex]. [tex]-9 b = 27[/tex]. [tex]b[/tex] = ?
Step 1: Divide both sides by [tex]-9[/tex].
[tex]b = -\frac{27}{9}[/tex]
Step 2: Simplify [tex]\frac{27}{9}[/tex] to [tex]3[/tex].
[tex]b = -3[/tex]
~I hope I helped you :)~
Answer:
Step-by-step explanation:
Here you go mate
Step 1
-9b =27 Equation/Question
Step 2
-9b =27 Simplify
-9b =27
Step 3
-9b =27 Divide both sides
answer
b=-3
WHAT IS THE ANSWER FOR THIS PLZ!!! I WILL MARK BRAINLIEST!!!
Answer:
-54+17= -37 LESS
35+(-61)= -26
Step-by-step explanation:
plz mark B R A I N L I E S T :P
Please help it's almost due will mark brainliest (only question 13)
Answer:
I got x = 0
Step-by-step explanation:
y = (47/2)x Substitute y =0
0 = (47/2) x Multiply both side
0 = x Swap the sides
x = 0
21 ft
What is the area of this rectangle?
Select the correct answer.
-21 ft
-24 1/2 yd 2
-14 yd 2
-28 yd2
-49 yd2
-None of the above.
Answer:
A=441 so none of the above
Step-by-step explanation:
A=wl=21·21=441
Which one is right ?? Ejenejejdjdjrjrjfjfjfdjjrjrjrjrtjrjrjrj ururhrjej
Answer:
The answer is 79.5
Step-by-step explanation:
Answer:
i cant really see but i think it is b
Step-by-step explanation:
Can you help me understand?
Answer:
-3,10
Step-by-step explanation: