The manager of a fast food restaurant is supposed to serve coffee that is 160 degrees Fahrenheit. A random sample of 20 cups of coffee reveal that the mean temperature is 151 degrees Fahrenheit with a standard deviation of 3 degrees. The manager would like to conduct a t-test for the population mean temperature of all cups of coffee served at this restaurant. Are the conditions for inference met?

No, the random condition is not met.
No, the 10% condition is not met.
No, the Normal/large sample condition is not met.
Yes, all conditions for inference are met.

Answers

Answer 1

Answer:

C. No, the Normal/large sample condition is not met.

Step-by-step explanation:

There is only 20 cup and for a sample to meet the Normal/large sample condition it must be greater than 30 samples or have a normal distribution or have no skewness or outliers  

Answer 2

No, the Normal/large sample condition is not met.

Option C is the correct answer.

What is a t-test?

A t-test is a statistical test used to determine whether there is a significant difference between the means of two groups or samples.

It is used when the sample size is small or the population standard deviation is unknown.

We have,

The conditions for inference in a t-test are:

Random condition:

The sample should be selected randomly from the population to ensure that the sample is representative of the population.

Normal/large sample condition:

The population should be normally distributed, or the sample size should be large enough to assume normality. A commonly used rule of thumb is that the sample size should be at least 30.

Independence condition:

The observations in the sample should be independent of each other.

In this case,

The random condition is met as the sample was selected randomly. However, the normal/large sample condition is not met since the sample size is only 20, and it's not clear if the population of coffee temperatures is normally distributed.

Therefore, the conditions for inference are not met, and a t-test for the population mean temperature of all cups of coffee served at this restaurant cannot be conducted.

Thus,

No, the Normal/large sample condition is not met.

Learn more about t-test here:

https://brainly.com/question/15870238

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Related Questions

could someone please answer only 22 for me please, don’t understand

Answers

Answer:

p = 10

Step-by-step explanation:

3p + 10 + 5p = 90

8p + 10 = 90

90 - 10 = 80

80 / 8 = 10

Someone plz help me

Answers

Answer:

C - Triangle, Pentagon, Hexagon, Decagon

Step-by-step explanation:

Triangle - 3 sides

Pentagon - 5 sides

Hexagon - 6 sides

Decagon - 10 sides

From Least to greatest!

:)

identify the center and radius of the circle (x-7)^2+(y-11)^2=36

Answers

Answer:

Centre is [tex](7,11)[/tex]

Radius is [tex]6[/tex]

Step-by-step explanation:

The general equation for a circle is written in the form [tex](x-a)^2+(y-b)^2=r^2[/tex] , where [tex](a,b)[/tex] is the centre of the circle, and [tex]r[/tex] is the radius.

For your circle, [tex](x-7)^2+(y-11)=36[/tex], we can compare it with the general equation to find the centre and radius.

[tex]-a = -7[/tex]

[tex]-b = -11[/tex]

[tex]r^2 = 36[/tex]

Therefore, [tex]a=7[/tex], [tex]b=11[/tex] and [tex]r=6[/tex].

Centre at [tex](a,b)[/tex] which is [tex](7,11)[/tex] .

Question 17 of 25
What is the probability of flipping a coin 10 times and getting tails 8 times?
Round your answer to the nearest tenth of a percent.
O A. 4.4%
B. 1.0%
OC 20.5%
D. 11.7%

Answers

Answer:

B

Step-by-step explanation:

10 ÷ 8

=0.8

≈1% probability

Ken makes a plan before writing a proof to show that the opposite angles of the
quadrilateral are congruent. What is missing from his plan?

Answers

Answer:

B

Step-by-step explanation:

Find the circumference of a circle with a radius of 100 centimeters.

Answers

Answer:

your answer is 628.32cm :)

Answer:  I think it is 628.32

Step-by-step explanation: You have to multiply the radius by two to get the diameter and then multiply that by 3.14(PI)

100 x 2=200    

3.14 x 200=628.32

scientific notation plz help

Answers

This may help

https://youtu.be/xxAFh-qHPPA

Jake has a 34% batting average. If Jake gets up to bat 10 times in one game, what is the BEST estimate of how many times he will hit the ball?

Answers

Answer:

Approximately 3 times, Jake will be able to hit the ball in a game of 10 balls

Step-by-step explanation:

Batting average determine the % share of time the bat hit the ball.

Jake's probability of hitting a ball = 0.34

Jake plays 10 games.

Probability of hitting a ball in a game is

10 * 0.34 = 3.4

Approximately 3 times, Jake will be able to hit the ball in a game of 10 balls

What is the missing measurement

Answers

Answer:

110

Step-by-step explanation:

HELP ME DEAR GOD-


Let H be the event that a coin flip lands with heads showing, and let T be the event that a flip lands with tails showing. (Note that P(H) = P(T ) = 0.5.) What is the probability that you will get heads at least once if you flip the coin ten times? Let A be the probability that heads appears at least once and B be the probability that heads does not appear.


If you flip the coin 10 times the probability you will get a heads at least once is ???

Answers

Answer:

The probability you will get a head at least once is 50%.

Step-by-step explanation:

Since the question is asking about the probability you will get, we can assume we’re answering based on theoretical probability. This type of probability is based on logic.

A coin always has two sides, one with head and the other with tails. So we can easily represent this as half and half. 1/2 as a fraction. 0.5 as a decimal. 50% as a percent. This means that P(H) will be equal to any one of these as they are all the same. The same can be said for the probability that a head does not appear, in other words, a tail appears. The reason being that the probability is split evenly between the two. This will again mean that P(T) will equal to any one of those.

So, A = 50% and B = 50%. The probability you will get a head at least once is 50%.

Hey guys I need help asap

Answers

First subtract the 12y and the 8x, multiply each side by 5. When you divide it both you will get the answer.

charlies goal is to sell an average of 18 cars each month this year. this table shows how many cars he sold each month from january to november. how many cars does charlie need to sell in december in order to meet his goal of a mean of 18 cars per month?

A. 17
B. 19
C. 26
D. 28

Answers

Answer: C-26

Step-by-step explanation: First you need to figure out how many total cars he needs to sell through the year by multiplying 12 by 18. This should get you 216. Now, we need to add all of his actual stats that we have so far to get a total of 190 cars sold. We know he needs 216 total by the end of the year, so we just have to subtract 190 from 216 to get our answer, 26.

haaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaalp thank you

Answers

HIIII HELLOOOOOOOOOOOOOOOO

PLEASE HELP!


1.Given the information provided for the right triangles shown here, find the unknown leg lengths to the nearest tenth.



2.The triangle shown here is not a right triangle. What are two different ways you change one of the values so it would be a right triangle? Sketch these new right triangles, and clearly label the right angle.

Answers

Answer:

1.

For triangle 1

[tex]a = 3\sqrt{5}[/tex]

For triangle 2

[tex]x = 2\sqrt{2}[/tex]

2.

Way 1

By reducing  the length of the side 4 to 3.60

Way 2

By increasing the length of side 7 to 7.21

Step-by-step explanation:

The complete question is attached in the image

Solution

1.

Both the triangles are right angled triangle

For triangle 1

[tex]7^2 = 2^2 + a^2\\49 = 4 + a^2\\a^2 = 45\\a = 3\sqrt{5}[/tex]

For triangle 2

[tex]4^2 = x^2+x^2\\2x^2 = 4*4\\x^2 = 8\\x = 2\sqrt{2}[/tex]

2.

Way 1

By reducing  the length of the side 4 to 3.60

Way 2

By increasing the length of side 7 to 7.21

PLEASE HELP ASAPPPP ( NO LINKS )

Answers

Answer:

1.

a.

i & iii

b.

ii & iii

2.

a.

2.5 or 5/2

b.

12.9

c.

12

d.

11/4

e.

4

3.

I cant help u w/ this one

4.

a.

.424

b.

.0082

5.

Yes both their methods works.

Step-by-step explanation:

Trust me

Answer: Question 1 : x + 3 = 14 and x = 14 - 3

Question 2: y/5 = 60 and y = 60 x 5

Solve each eqaution

2x = 5 : answer : x = 5/2

y + 1.8 = 14.7 (subtract 1.8 on each side) : answer = 12.9

6 = 1/2z (combine terms) Answer 12

3 1/4 = 1/2 + W (Convert mixed numbers to improper fractions) answer = -1 9/13

2.5t = 10 : answer : 4

2.5t-(10)=0

t=10/2.5

(For 3 I can't draw the diagram asked. sorry)

21.2 - 0.82 = 20.38

2.05 x 0.004 = 0.00820.

Lin is right. Jada method 60 divided by 4 (1/4 of 60) which gives you 15. Andre method: 25/100 x 60 = 50.

Hoped this helped

Step-by-step explanation:

Which ratio is equivalent to 1 to 8?
7 to 14
7 to 9
6 to 41
6 to 48

Answers

6 to 48 simplified

it becomes 1 to 8

so the answer is 6 to 48

plz mark as brainliest

I think the answer is 7 to 14

Help me pleaseeeeeeeeeee

Answer options

A.18 in2
B. 24 in2
C. 30 in2
D.36 in2

Answers

Answer:

c

Step-by-step explanation:

6x2=12

3x6=18

18+12= 30

Answer:

B. 24 in ^2

Step-by-step explanation:

To find this follow these steps:

1. find the area of the first square: 6 inches times 3 inches so you get 18 inches squared

2. Find the area of the second square : 3 inches times 2 inches you get 6 inches squared

Have a wonderful day!

Determine the period.

Answers

A period is how long it takes the function to repeat itself. Usually measured from one peak to the next.

In this case the period is 7 units

Correct I’ll give brainlist no links or I’ll report

Answers

It’s the second one…………..

what percent of 16 is 120​

Answers

The Answer would be 13.333333333333% or 13.3%.

PLEASE HELP ME AND NO VIRUS LINKS 40 POINTS

Which side lengths form a right triangle?
Choose all answers that apply:

Answers

Answer:

All the above

Part A A
Select the number that is greater
15x15x15 or
13x13x13
Help!

Answers

Answer:

15x15x15

Step-by-step explanation:

13x13x13= 2197

15x15x15= 3375

What is the solution of x + 6 < 5?

Answers

Answer:

a

Step-by-step explanation:

Answer:

x < -1

Step-by-step explanation:

Hope this helps you :)

If A and B are mutually exclusive, and if P(A) = 23% and P(B) = 16%, what is P(A or B)?
P(A or B)=[%

Answers

Answer:

P(A or B) = 39%

Step-by-step explanation:

If A and B are mutually exclusive, they cannot occur at the same time, therefore their probabilities are added. This means P(A or B) = P(A) + P(B) = 23% + 16% = 39%

Which expressions are equivalent to the one below? Check all that apply log2-log4

Answers

Answer:

-log(2)

Step-by-step explanation:

The diagram shows a pyramid with a rectangular base. The volume of the pyramid is 108cm^3.

What is the length of the base edge labeled x?

1. 2cm
2. 6cm
3. 18cm
4. 30cm

Answers

The correct answer is 6 cm

Answer:

Solution given:

Volume of pyramid=108cm³

area of base*height=108cm²

6*x*3=108

x=108/18

x=6

option2:6cm

HELP PLEASE. !!!!!!

Answers

Answer:

12

Step-by-step explanation:

The area of a square is 50 square meters. Find the length of a side. LABEL answer!!

Answers

Answer:

12.5

Step-by-step explanation:

50÷4=12.5

Answer:

7.07m

Step-by-step explanation:

Let the length of a side of a square

= a metre

= 50

[tex] \sf{a = \sqrt{50m {}^{2} }}[/tex]

[tex] \sf{ = \sqrt{2 \times 5 \times 5m {}^{2} }}[/tex]

[tex] \sf{ = 5 \sqrt{2m} }[/tex]

5x 1.414

7.07 m

therefore

side of triangle

[tex] \sf \: = 5 \sqrt{2m} [/tex]

7.07m

I need help with this please

Answers

Answer:

x = 4

y = 10

Step-by-step explanation:

3x + 2y = 32 (Multiply this equation by -3)

9x - 3y = 6

-9x - 6y = -96

9x - 3y = 6

-9y = -90

y = 10

3x + 2y = 32

3x + 2(10) = 32

3x + 20 = 32

3x = 32 - 20

3x = 12

x = 4

Animal scientists studied foraging behavior of the scrub lizard, found in central Florida. Foraging is the process of searching for food. To study such behavior, the scientists recorded the number of head movements per minute for a sample of 63 lizards. A 95 percent confidence interval constructed from the sample is given as 2.7±0.62 head movements per minute. Based on the interval, is a claim of 3 head movements per minute plausible?

Answers

Answer:

The answer is "The claim is plausible because 3 head movements per minute are contained within the interval".

Step-by-step explanation:

The wet-growing process of creation, located in western Florida, is researched by animal researchers. Food production is the process of finding food. The researchers had collected a sampling of 63 lizards with the number of head motions per minute to investigate such behavior. The sample-based confidence interval of 95% is given as hand gestures of 2.7±0.62 per minute. Depending on the interval, a statement of 3 hand gestures is plausible per minute then within the interval, there have been three head motions per minute.

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