Solve all plzzz 14. In general, the null and alternative hypotheses areA. additiveB. correlatedC. multiplicativeD. mutually exclusive15. If the chosen significance level is a = 0.05, thenA. there is a 5% probability of rejecting a true null hypothesisB. there is a 5% probability of accepting a true null hypothesisC. there is a 5% probability of rejecting a false null hypothesisD. there is a 5% probability of accepting a false null hypothesis16. What is the decision rule when using the p-value approach to hypothesis testing?A. Reject Ho if the p-value > a.B. Reject Ho if the p-value < a.C. Do not reject Hoif the p-value < 1 - a.D. Do not reject Ho if the p-value > 1 - a.Answer:17. A portfolio manager claims that the mean annual return on one of the mutual funds he managesexceeds 8%. To substantiate his claim, he states that over the past 10 years, the mean annualreturn for the mutual fund has been 9.5%, with a sample standard deviation of 1.5%. Assumeannual returns are normally distributed.1) Specify the competing hypotheses to test the portfolio manager's claim.

Given, Questions, we have to choose correct option, Questions are related to hypothesis

Answered: 14. In general, the null and…

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

A paint manufacturer advertises that one gallon of its paint will cover 400 square feet of an interior wall. Some local painters suspect the average coverage is considerably less and decide to conduct an experiment to find out. Which of the following are the correct null and alternative hypotheses to be tested? A construction company has a bid on two large construction projects. The president believes that the chances of winning the first contract is 55% and the chances of winning the second contract is 30% and that winning either contract is independent of winning the other. What are the chances the company will not win either contract? Spelling mistakes in a text are either “nonword errors” or “word errors.” A nonword error produces a string of letters that is not a word, such as “the” typed as “teh.” Word errors produce the wrong word, such as “loose” typed as “lose.” Nonword errors make up 25% of all errors. A human proofreader will catch 80% of nonword errors and 50% of…
When is a researcher at risk of making a type 2 error? whenever H0 is rejected whenever H1 is rejected whenever H0 fails to reject the risk of a type 2 is independent of the decision from a hypothesis test
In quality–control applications of hypothesis testing, the null and alternative hypotheses are frequently specified as H0: The production process is performing satisfactorily and Ha: The process is performing in an unsatisfactory manner. Accordingly, α is sometimes referred to as the producer's risk, while β is called the consumer's risk. An injection molder produces plastic golf tees with a mean weight of 0.252 ounce. To investigate whether the injection molder is operating satisfactorily, 40 tees were randomly sampled from the last hour's production. Their weights (in ounces) are listed in the accompanying table. Complete parts a through g. 0.248 0.251 0.249 0.250 0.255 0.251 0.251 0.248 0.248 0.251 0.254 0.252 0.256 0.251 0.252 0.253 0.250 0.254 0.254 0.254 0.251 0.251 0.252 0.249 0.249 0.251 0.252 0.253 0.248 0.252 0.252 0.252 0.249 0.252 0.249 0.253 0.252 0.249 0.249 0.251 b.…
If the level of significance for a test for independency was 5% and the p-value was 0.03, what would the conclusion be: a. Fail to reject the null hypothesis b. Reject the null hypothesis and accept the alternate hypothesis
The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 50 records of automobile driver fatalities in a certain county showed that 33 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.10. State the null hypothesis H0 and the alternate hypothesis H. np? nq? What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ?? Interpret your conclusion in the context of the application.
Consider the following statements: (i) If a researcher fails to reject the null hypothesis, then the alternative hypothesis should be accepted. (ii) The significance level and the probability of a Type I error are equivalent. (iii) Increasing the probability of a Type I error by 1% decreases the probability of a Type II error by 1%. (iv) The critical region (or decision rule) of a test, indicates when to reject the alternative hypothesis. Which one of the following is true? a. (i) and (iii) are true b. (iii) is true c. None of the suggested answers are correct d. (ii) and (iv) are true e. (i) and (ii) are true
Dreamfilms Studios boasts that its summer features are so good that at least half of all tickets sold one summer are for its films. A competing studio claims that less than half of all tickets sold are for Dreamfilms' movies. After the hypothesis test is completed, the conclusion is to fail to reject the null hypothesis. If the true percentage of tickets sold for Dreamfilms Studios' movies that summer was only 48%, was an error committed? If so, what type?
A certain university claims that for the last school year the proportion of students who were not able to earn a college diploma is at most 25%. What is the null hypothesis? a. Proportion is greater than or equal to 0.25.b. Proportion is less than or equal to 0.25.c. Proportion is equal to 0.25.d. Proportion is not equal to 0.25.
A researcher conducts a research study to examine whether there is a difference between two treatments regarding anxiety. Which of the following is consistent conceptually with the null hypothesis? a. The second treatment is less effective than the first treatment regarding anxiety. b. The first treatment is less effective than the second treatment regarding anxiety. c. There is a difference between the two treatments among the general population regarding anxiety. d. There is no difference between the two treatments among the general population regarding anxiety.
A manufacturer of hand-held calculators receives large shipments of printed circuits from a supplier. It is too costly and time-consuming to inspect all incoming circuits, so when each shipment arrives, a sample is selected for inspection. Information from the sample is then used to test H0: p = 0.01 versus Ha: p > 0.01, where p is the actual proportion of defective circuits in the shipment. If the null hypothesis is not rejected, the shipment is accepted, and the circuits are used in the production of calculators. If the null hypothesis is rejected, the entire shipment is returned to the supplier because of inferior quality. (A shipment is defined to be of inferior quality if it contains more than 1% defective circuits.) In this context, define Type I and Type II errors. (Select all that apply.) a. A Type I error is obtaining convincing evidence that more than 1% of a shipment is defective when in fact (at most) 1% of the shipment is defective. b. A Type I error is not…
A certain university claims that for the last school year the proportion of students who were not able to earn a college diploma is at most 25%. The claim is found in the alternative hypothesis. Is this true or false? What is the null hypothesis?What is the alternative hypothesis?
If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = -0.76? If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = +2.21? If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean equals 500 if you use the Z test? If you use a 0.01 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting H0 : m = 12.5 if you use the Z test? What is the p-value if, in a two-tail hypothesis test, ZSTAT = +2.00? What is the p-value if, in a two-tail hypothesis test, ZSTAT = -1.38?

SEE MORE QUESTIONS

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