Answers
Answer: it c i think if im wrong dont be mad 0-0
Step-by-step explanation:
ok thx
Related Questions
Help please due in 45 minutes!!!
Answers
Answer:
x=8
y=1
the point would be at (8,1)
Data were collected on annual personal time (in hours) taken by a random sample of 16 women and 7 men employed by a medium sized company. The women took an average of 24.75 hours of personal time per year with a standard deviation of 2.84 hours. The men took an average of 21.89 hours of personal time per year with a standard deviation of 3.29 hours. The correct 90% confidence interval for the difference between women and men in the average number of hours of personal time taken per year is ________.
Answers
Answer:
The correct 90% confidence interval for the difference between women and men in the average number of hours of personal time taken per year is
contained by the interval (0.54 , 5.18)
Step-by-step explanation:
Given that:
for women
sample size = n₁ = 16
sample mean [tex](\bar X_1)[/tex] = 24.75
standard deviation s₁ = 2.84
for men
sample size for men = n₂ = 7
sample mean [tex](\bar X_2)[/tex] = 21.89
standard deviation s₂ = 3.29
degree of freedom = [tex](n_1 + n_2 )-2[/tex]
= 16 + 7 -2
= 21
The critical value for [tex]\alpha = 0.1 \ and \ df \ of \ 21 \ is :[/tex]
[tex]t_{0.005;21}= 1.721[/tex]
The pooled standard deviation can be calculated as follows since the population variances are assumed to be equivalent.
[tex]s_p = \sqrt{\dfrac{(n_1 -1)s_1^2+(n_2-1)s_2^2}{n_1+n_2-2}}[/tex]
[tex]s_p = \sqrt{\dfrac{(16 -1)2.84^2+(7-1)3.29^2}{16+7-2}}[/tex]
[tex]s_p = \sqrt{\dfrac{(15)8.0656+(6)10.8241}{21}}[/tex]
[tex]s_p = 2.976[/tex]
The standard error is estimated as follow:
[tex]se = s_p\sqrt{\dfrac{1}{n_1} + \dfrac{1}{n_2}}[/tex]
[tex]se = 2.976\sqrt{\dfrac{1}{16} + \dfrac{1}{7}}[/tex]
se = 1.348
Finally, the confidence interval [tex]C.I = ( x_1 -x_2 -t_c \times se \ \ ; \ \ x_1-x_2 +t_c \times se)[/tex]
[tex]=(24.75 - 21.89 -1.721 \times 1.348 \ \ , \ \ 2475 - 21.89 + 1.721 \times 1.348) \\ \\ \mathbf{ = (0.54 \ \ , \ \ 5.18)}[/tex]
Witch value of x makes this equation true 2(2x - 4) + 4=12
A) 3
B) 4
C) 5
D) 6
Answers
Answer:
X=4
Step-by-step explanation:
2(2x-4)+4=12
4x-8+4=12
4x-4=12
4x-4+4=12+4
4x=16
x=4
Sara reduced the time it takes her to run a mile from 12 minutes to 8 minutes. Which is closest to Sara's percent decrease in the time it takes her to run a mile?
Answers
Answer:
33%
Step-by-step explanation:
3 Ms. Sosa's principal gave her $350 to spend on school supplies at the beginning of the year. She bought 10 packs of dry erase markers for $9.98 each and 15 packs of pre-sharpened pencils that cost \$12.99 each . How much does she have left to spend?
A $302.03
B $644.65
C $55.35
D $295.65
Answers
Answer:The answer is D
Step-by-step explanation: Mark me brainliest please
the u.s. produces 5.39x 10
Answers
The expression of 5.39 × 10⁷ metric tons in standard notation is; 53,900,000 metric tonnes
How to express exponents in standard notation?We are given the quantity of wheat produced each year as 5.39 × 10⁷ metric tons.
Now, that quantity is in exponent form and the way to express it in standard notation is to expand the exponent which gives;
5.39 × 10⁷ = 5.39 * 10 * 10 * 10 * 10 * 10 * 10 * 10
⇒ 5.39 * 10000000
⇒ 53,900,000 metric tonnes
The complete question is;
The U.S. produces 5.39 × 10⁷ metric tons of wheat each year. Express that number in standard notation
Read more about Standard notation at; https://brainly.com/question/5756316
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ASAP PLEASE HELP!!! How many cubic feet of sand will fill a sandbox with the following dimensions: 6 ft long x .5 ft high x 5 ft wide?
Answers
Answer:
15ft³
Step-by-step explanation:
please help!!!!!!!!!!!!
Answers
Answer:
h = 2 ft
Step-by-step explanation:
V = lwh
144 = (9)*(8)*(h)
144 = (72)*h
h = 144/72
h = 2 ft
Sara is making a key chain using the bead design shown.
What fraction of the beads in her design are either red or blue?
pcagm15g560619
Answers
This is the answer
Work out
25
% of
401.16
m
Answers
Answer:
100.29m
Step-by-step explanation:
girlcome 5324611502
p:here
Answers
Answer:
what
Step-by-step explanation:
Answer:
im confused
Step-by-step explanation:
The length of one edge of a cube is 3 units. What is the volume of this cube in cubic units
Answers
Answer:
27 cubic units
Step-by-step explanation:
A cube has equal dimensions. So the volume is 3units × 3units × 3units or 27cubic units
the sum of two consecutive odd number is 108. find the smaller number
Answers
9514 1404 393
Answer:
53
Step-by-step explanation:
Their average is the sum divided by 2: 108/2 = 54. This average is the even number between the two odd numbers of interest.
The smaller number is 53.
Victoria has a jewelry box shaped like a rectangular prism! Please help!!
Answers
Answer:
C.
Step-by-step explanation:
Length * width * height = volume
15*9*9 = 1215
Hannah decided to curl up and read a good book. She started reading at 10:00 a.m. and
finished reading at 11:43 a.m. How much time did she spend reading?
Answers
Answer:
she spend one hour and 43 minutes reading
Step-by-step explanation:
hope you have a great day kee learning
Which of the following are possible answers you might get when solving a system of equations? Select all that apply
A. One Solution
B. No Solution
C. Infinite Solutions
D. Unique Solutions
Answers
Find the surface area of the figure. Round to the nearest tenth.
WILL MARK BRAINLIEST!!! PLS HELP THIS IS DUE IN 10 MIN AND PLEASE NO DROP FILES!! :)
Answers
Answer:
14 x 6.9 x 8 = 56
Step-by-step explanation:
[tex](x + 2)(3x - ) = 0[/tex]
Answers
Answer:
∝∦⊄↑∫∫π≡³≥α㏑∩⊃∞
Step-by-step explanation:
Sami opened an account with a deposit of $4,000.
• The bank pays 3.5% annual simple interest on this account
• Sami did not make any additional deposits or withdrawals.
How long will it take for Sami to earn $2,100 in interest on this
account?
Answers
835.71$
Step-by-step explanation:
is the answer just done it
Mr. adhakari deposited a sum of RS 2400 in a bank at 5% per year simple interest. how much interest would he get at the end of 4 year ?
Answers
Answer:
Mr. adhakari deposited a sum of RS 2400 in a bank at 5% per year simple interest. how much interest would he get at the end of 4 year ? - 480 rs
SOMEONE PLEASE help me answer this
Answers
Answer:
5.7 m is the answer
Step-by-step explanation:
a = 7m
b = ?
c = 9m
According to the Pythagorean theorem,
a² + b² = c²
7² + b² = 9²
49 + b² = 81
b² = 81 - 49
b² = 32
b = 5.656
Round to the nearest tenth,
b = 5.7 m
Find the solution set of the inequality:
82 + 2 > 34
SOMEONE PLS HELP
Answers
Answer:
82+2>34
84>34
True
I hope this helps :)
What is the equation of the following line written in slope-intercept form?
y = -5x
y = 5x
y = 5/x
Answers
Answer:
y=5x
Step-by-step explanation:
first, we know that a rising line's slope is always positive, so the first one is incorrect
let's figure out the slope: y-y'/x-x' is the formula.
now, -5-5/-1-1= -10/-2= 5. so the slope of this line is 5.
Mr. Dorsey and his family are going on a road trip for their family vacation. It will take them 300 total miles. After the first 3 days, they have driven 180 miles. What percent of the driving distance is left after the first 3 days?
Step 1 - How many miles do they have left to drive? ______________
Step 2 - Find the percent this is equal to.
____________ = ______________
100
giving brainly out
Answers
The percent of the journey is 60% so 40% left
Hoped this helped
please hurry will mark brainiest
Answers
Answer:
Step-by-step explanation:
x(x+8) = 450
x² + 8x - 450 = 0
Quadratic formula:
x = [-8±√(8²-4(1)(-450))]/[2(1)]
= [-8±2√466]/2
= -4±√466
≅ 17.59, -25.59
-25.59 is an extraneous solution, so x ≅ 17.6 inches.
The dimensions of the blackboard are 17.59 inches by 25.59 inches
Fernando and Maria are at opposite sides of a park. They plan to meet later at a fountain that is located somewhere between them. Maria will arrive at the fountain first, before Fernando even leaves his starting location. The ratio of Maria's starting location to the fountain to Fernando's starting place is 5:3. What is the location of the fountain? Round to the nearest tenth, if necessary. ( ,
Answers
Answer: the fountain is located at point (-1,-0.5)
Step-by-step explanation:
Answer: (-1 , -0.5)
Step-by-step explanation:
Help, please will put brainiest 20 ponits
Answers
Answer:
15
Step-by-step explanation:
you would first have to put the numbers into this equation
180=(6x-8)+38+60
now you have to solve for x
180=(6x-8)+98
82=6x-8
100=6x
15=x
x=15
hope this helps! have a nice day :)
Answer:
its c
Step-by-step explanation:
because every angle in a acute triangle has to be less than 90 and the other two look bigger than angle x
What is the value of X in the equation -6+ X equals -2
1) 8
2) 4
3) -4
4) -8
Answers
2) 4
Hope this helps :T
PLEASE HELP
BRAINLIEST
NO FILE HOSTING LINKS!!
Answer each part. If necessary, round your answers to the nearest hundredth.
Answers
Answer:
a) 11/7 pages or about 1.57
b) 23/11 dollars or 2.09090909....... (goes on forever)
BRAINLIEST PLS
A study will be conducted to investigate whether there is a difference in pain relief for two brands of headache pills, N and P. Participants will be randomly assigned to one of two groups. One group will take pill N when they experience a headache, and the other group will take pill P when they experience a headache. Each participant will record the number of minutes it takes until relief from the headache is felt. The mean number of minutes will be calculated for each group. Which of the following is the appropriate test for the study?
a. A two-sample z-test for a difference between population proportions.
b. A two-sample t-test for a difference between population means.
c. A matched-pairs t-test for a mean difference.
d. A one-sample z-test for a population proportion
e. A one-sample t-test for a population mean
Answers
Answer:
b. TWO SAMPLE T TEST FOR POPULATION MEANS
Step-by-step explanation: the problem mentions difference and the mean number of minutes so you know it'll be a difference in population MEAN