For the given claim, complete parts (a) and (b) below.Claim: High school teachers have incomes with a standard deviation that is less than $18,750. A recent study of 139 high school teacher incomes showed a standard deviation of $17,750.a. Express the original claim in symbolic form.b. Identify the null and the alternative hypotheses that should be used to arrive at a conclusion that supports the claim.Но:На:

a. The original claim is represented in a symbolic form, σ<$18,750

Answered: For the given claim, complete parts (a)…

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

Similar questions

The table includes 257,264 Hispanic babies. For groups of 257,264 babies, find the mean and standard deviation for the number of girls, assuming that the probability of a girl is being born is the rounded result. Round to four decimal places.
A survey is planned to determine the mean annual family medical expenses of employees of a large company The management of the company wishes to be 95% confident that the sample mean is correct to within +$75 of the population mean annual family medical expenses. A previous study indicates that the standard deviation is approximately $404. a How large a sample is necessary? b. If management wants to be correct to within +$15, how many employees need to be selected?
Type an integer or decimal, do not round.
3. A small business in Irvine that sells clothing makes roughly $35 per transaction. The CEOsuspects that the business has recently been making less than usual. 40 transactions are randomlysampled from recent transactions and the dollar amount of the transaction recorded. The samplehas a mean of $32.50 and standard deviation of $2.50. a. Set up the null and alternative hypothesis (using mathematical notation/numbers and interpretthem in context of the problem) b. Calculate the test statistic for the test from part a. c. Compute the p-value for the test (use R). Round to the nearest 3rd decimal place, 0.xxx.
(a) Write the claim mathematically and identify H0 and Ha. Which of the following correctly states H0 and Ha? (b) Use technology to find the P-value.(Round to three decimal places as needed. (c) Decide whether to reject or fail to reject the null hypothesis. (d) Interpret the decision in the context of the original claim.
A fast-food chain claims one large order of its fries weighs 170 grams. Joe thinks he is getting less than what the restaurant advertises. He weighs the next 12 random orders of fries before he eats them and finds the sample mean is 165.9 grams and the standard deviation is 11.98 grams. What conclusion can be drawn at a = 0.10? O There is not sufficient evidence to prove the fast-food chain advertisement is true. O There is sufficient evidence to prove the fast-food chain advertisement is false. ◇ Joe has sufficient evidence to reject the fast-food chain's claim. ○ Joe does not have sufficient evidence to reject the fast-food chain's claim. O There is not sufficient data to reach any conclusion.
An educational researcher claims that the average GPA of graduate students at FIU is less than 3.5 . To test his claim he collected data on 81 graduate students . The sample mean GPA was 3.25 with a standard deviation of 0.3 . What is the conclusion ? Group of answer choices A. Reject the null hypothesis B. Type I error C. Fail to reject the null hypothesis D. Reject the alternative hypothesis
A golf analyst claims that the standard deviation of the 18-hole scores for a golfer is at most 3.1 strokes. State Ho and H, in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. ..... State the null hypothesis in words and in symbols. Choose the correct answer below. A. The null hypothesis expressed in words is, "the standard deviation of the 18-hole scores for a golfer is not 3.1 strokes." The null hypothesis is expressed symbolically as, "Ho: σ7 3.1." B. The null hypothesis expressed in words is, "the standard deviation of the 18-hole scores for a golfer is at least 3.1 strokes." The null hypothesis is expressed symbolically as, "Ho: o2 3.1." C. The null hypothesis expressed in words is, "the standard deviation of the 18-hole scores for a golfer is at most 3.1 strokes." The null hypothesis is expressed symbolically as, "Ho: os3.1." D. The null hypothesis expressed in words is, "the…
A certain website claims that Indian worker spends an average of 2117 hours per year. Assume the times are normally distributed, and that the standard deviation is 250 hours. A person is classified as a heavy worker if he or she is in the upper 10 percent. What is the least number of hours per year that makes a worker a heavy worker? Select one: O a. 1797 O b. 2377 O c. 1857 O d. 2437
From a sample with n = 12, the mean number of televisions per household is 2 with a standard deviation of 1 television. Using Chebychev's Theorem, determine at least how many of the households have between 0 and 4 televisions. At least of the households have between 0 and 4 televisions. (Simplify your answer.)
A realtor claims that in a certain neighborhood, the average house is worth $200,000. Having been house shopping in that neighborhood, you do not believe the claim and wish to provide evidence that the claim is not true. You collect a random sample of 200 recent house sales in that neighborhood, finding an average sale price of $203,910 with a standard deviation of $21,597. Correctly using a hypothesis test, which of the following statements is most accurate? You cannot reject the null at the 10% level of significance O You can reject the null at the 10% level of significance, but cannot reject the null at the 5%, 2%, or 1% level of significance You can reject the null at the 10% and 5% level of significance, but cannot reject the null at the 2%, or 1% level of significance You can reject the null at the 10%, 5%, and 2% level of significance, but cannot reject the null at the 1% level of significance You can reject the null at the 10%, 5%, 2%, and 1% level of significance Previous Next…

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS