A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You be the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table. Click here to view page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why? OA. Use a normal sampling distribution because the population is normal, and o is known. OC. Use a t-sampling distribution because the population is normal, and o is known. OE. Use a normal sampling distribution because n> 30. *** OB. Use a t-sampling distribution because the population is normal, and o is unknown. OD. Use a t-sampling distribution because n < 30. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You be the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table. Click here to view page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why? OA. Use a normal sampling distribution because the population is normal, and o is known. OC. Use a t-sampling distribution because the population is normal, and o is known. OE. Use a normal sampling distribution because n> 30. *** OB. Use a t-sampling distribution because the population is normal, and o is unknown. OD. Use a t-sampling distribution because n < 30. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: The average birth weight of elephants is 220 pounds. Assume that the distribution of birth weights…

A: Solution-: Given: μ=220,σ=50 We want to find the birth weight of elephants at the 90th percentile.

Q: Activity 2 of 3 What percent of Braves players fall between 230 and 270? O A. 95.4% O B. 47.7% O C.…

A: Answer Option c = 68.2% is correct

Q: Assume that the results are normally distributed. Pedro took an exam in a class in which the mean…

A: The formula for z-score is z = x - μσ where μ is the mean and σ is the standard deviation.…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

Q: Measuring lung function: One of the measurements used to determine the health of a person's lungs is…

A: The hypothesized mean is 2.1.

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 95 percent of…

A: Given data: average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 95 % of all…

Q: he scores on a test have a mean of 100 and a standard deviation of 15. If a personnel manager…

A: given data, assume the variable is normally distributed.μ=100σ=15If a personnel manager wishes to…

Q: Wyatt earned a score of 670 on Exam A that had a mean of 750 and a standard deviation of 50. He is…

A: Here both exam A and exam B are normally distributed. We need to find the marks required in exam B…

Q: Find the proportion of Normally distributed observations with a zz-score above 0.84. Give your…

A: Let Z be the random variable from normal distribution with z-score above 0.84 then we will find the…

Q: What is the critical value? The critical value is (Round to three decimal places as needed.)

A: The degrees of freedom is, df=n-1=8-1=7 The degrees of freedom is 7. The level of significance is…

Q: A set of data has a normal distribution with a mean of 100 and a standard deviation of 15. Find the…

Q: A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon…

A: In the study, the population is normally distributed and the population standard deviation σ is…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

Q: According to data for a population, 3-year-old boys have a mean height of 38 inches and a standard…

A: given data normal distributionμ = 38 inchesσ = 2 inchesfor x = 42 inchespercentile = ?

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: Suppose that 35% of all adults in a population would say "good" and 65% would say "bad" if they were…

A: Given Data: p=0.35 n=1000

Q: An educational study to be conducted requires a test score in the middle 40% range. If the mean is…

A: Let us assume X=score Given that X follows a normal distribution with mean= 100 and standard…

Q: A set of data has a normal distribution with a mean of 100 and a standard deviation of 15. Find the…

A: First we reduce the given normal distribution to the standard normal distribution using the formula…

Q: A car company says that the mean gas mileage for its luxury sedan is at least 24 miles per gallon…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Determine the level of significance. Significance level: In order to decide how small the…

Q: The average retirement age in America is 62 years old. Do small business owners retire at a…

A: Hi, Since your question has more than 3 parts, we have solved only the first three subparts for you.…

Q: The velocity of an object can be modeled by an approximately normal distribution with a mean of 70…

A: Let X be the random variable from normal distribution with mean (μ) = 70 and standard deviation (σ)…

Q: A class has a average height of 68 inches and a standard deviation of 2 inches. What percent of the…

A: Let x be the height which follows normal distribution with mean 68, and standard deviation 2. The…

Q: Assume that human body temperatures are normally distributed with a mean of 98.06°F and a standard…

A: Given: Mean μ=98.06 Standard deviation σ=0.86 The above 5% people are to exceed the required…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A: We have to find given probability.

Q: 2. The ages of the 189 people were recorded in a clinical study. The data have been partially…

A: The given data is as follows,…

Q: cats is about 3 ounces. Assume that the distribution of birth weights is Normal with a standard…

A: Given that. X~N( μ , ?) μ=3 , ?=0.3 Z-score =( x - μ )/?

Q: It has been reported that the standard deviation of the speeds of drivers on interstate -35 near…

A: It has been reported that the standard deviation of the speeds of drivers is 6.8 miles per hour for…

Q: Draw two normal curves that have the same mean but different standard deviations. Describe the…

Q: t problem. Use the empirical rule

A: According to the empirical rule, approximately 95% of the observations fall within 2 standard…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

Q: Let X be the resting heart rate of a physically fit man. Assume that the resting heart rate for fit…

A: Let X be the resting heart rate of a physically fit man. Assume that the resting heart rate for fit…

Q: The data in a data set are normally distributed with a mean of 190 and a standard deviation of 30.…

A: ∗Mean μ=190 standard deviation σ=30 X~N 190,30 we need to find, PX<130+PX>250=P…

Question

A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You believe
the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard
deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed
Click here to view the t-distribution table.
Click here to view page 1 of the normal table.
Click here to view page 2 of the normal table.
Which sampling distribution should be used and why?
OA. Use a normal sampling distribution because the
population is normal, and o is known.
OC. Use a t-sampling distribution because the
population is normal, and o is known.
OE. Use a normal sampling distribution because
n> 30.
OB. Use a t-sampling distribution because the
population is normal, and o is unknown
OD. Use a t-sampling distribution because n<30.
OF. Use a normal sampling distribution because the
population is normal, and o is unknown.
11111

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given information

VIEW

Step 2: Solution

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Follow-up Questions

Read through expert solutions to related follow-up questions below.

Follow-up Question

C. Use a t-sampling distribution because the
population is normal, and o is known.
OE. Use a normal sampling distribution because
n> 30.
State the appropriate hypotheses to test.
IS
OA. Ho: ≤25
Ha u>25
OC. H₂ μ#25
H₂ μ = 25
What is the value of the standardized test statistic?
Get more help -
Q Search
16.
4-
4
The standardized test statistic is (Round to two decimal places as needed)
♫t.
18
90
C
f9
OD. Use a t-sampling distri
KA
OF. Use a normal sampling
population is normal, an
B. Ho: μ ≥25
Ha: μ< 25
OD. Ho: μ = 25
Ha: μ#25
Clear all
f10 ▷ll
O
f11
DDI

Solution

by Bartleby Expert

SEE SOLUTION

Follow-up Question

y). You believe the claim is incorrect and find th
random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a = 0.10, test the company's claim. Assume the
population is normally distributed.
Click here to view the t-distribution table.
Click here to view page 1 of the normal table.
Click here to view page 2 of the normal table.
o is known.
OE. Use a normal sampling distribution because n > 30.
State the appropriate hypotheses to test.
OA. Ho: ≤25
H₂ μ25
OC. Ho μ#25
H₂ μ = 25
his Get more help -
A
Tip
P Pearson
OF. Use a normal sampling distribution because the population
is normal, and o is unknown.
OB. Ho: μ ≥ 25
H₂: μ< 25
OD. Ho: μ = 25
H₂: μ#25
Clear all
opyright © 2023 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |
Q Search
?
O
Check answer
151249225
3:26 PM
7/19/2023

Solution

by Bartleby Expert

SEE SOLUTION

Similar questions

Please see attached.
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 63 miles per hour, with a standard deviation of 4 miles per hour. Estimate the percent of vehicles whose speeds are between 59 miles per hour and 67 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 59 miles per hour and 67 miles per hour.
The average birth weight of elephants is 230 pounds. Assume that the distribution of birth weights is Normal with a standard deviation of 50 pounds. Find the birth weight of elephants at the 90th percentile.
please answer the question in the photo. Thank you
Please see attachment
The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied year round. Approximate the mean and standard deviation square footage. Click the icon to view the data table. The mean square footage is x=. (Round to the nearest integer as needed.)
Clear writing please
The average birth weight of elephants is 250 pounds. Assume that the distribution of birth weights is Normal with a standard deviation of 40 pounds. Find the birth weight of elephants at the 90th percentile.
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 44 feet. Let X = distance in feet for a fly ball. Find the 80th percentile of the distribution of fly balls. (Round your answer to one decimal place.)
A balanced die with six sides is rolled 60 times. Find the mean and the standard deviation of the distribution of X. Interpret
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 65 miles per hour and 71 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately nothing% of vehicles travel between 65 miles per hour and 71 miles per hour.
Ms. Gonzalez has recorded the test scores for each of her 25 students, She has calculated EX? = 320 and (EX) = 5,000, Calculate the estimated population standard deviation for her data. 1.98 2.24 O 5.00 O 3.95