Explanation Calculation: Test statistic for t : The z statistic value for sample test statistic x ¯ is, t = x ¯ − μ ( s n ) In the formula x ¯ is sample mean, μ is population mean, σ is sample standard deviation, and n is the sample size . Degrees of freedom : The degrees of freedom for the t distribution is, d . f . = n − 1 Let μ denotes the mean age of coyotes. From the given information the value of α is 0.01, and the average coyotes in this region of northern Minnesota tend to live longer than the average of 1.75 years. The null and alternative hypothesis is, Null hypothesis: H 0 : μ = 1.75 Alternative hypothesis: H 1 : μ > 1.75 T-statistic : Substitute x ¯ as 2.05, μ as 1.75, s as 0.82, and n as 46 in the test statistic formula t = 2.05 − 1.75 ( 0.82 46 ) = 0.3 0

Understandable Statistics: Concepts and Methods

12th Edition

ISBN: 9781337119917

Author: Charles Henry Brase, Corrinne Pellillo Brase

Publisher: Cengage Learning

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Chapter 8.2, Problem 29P

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Check whether the null hypothesis is rejecting or fail to reject by using the critical region method.

Compare the conclusion of critical value method with the P-value method.

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Chapter 8.2, Problem 28P

Chapter 8.2, Problem 30P

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30. An individual who has automobile insurance from a certain company is randomly selected. Let Y be the num- ber of moving violations for which the individual was cited during the last 3 years. The pmf of Y isy | 1 2 4 8 16p(y) | .05 .10 .35 .40 .10 a.Compute E(Y).b. Suppose an individual with Y violations incurs a surcharge of $100Y^2. Calculate the expected amount of the surcharge.

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Check whether the null hypothesis is rejecting or fail to reject by using the critical region method. Compare the conclusion of critical value method with the P -value method.

Solution Summary: The author compares the conclusion of critical value method with the P -value method to determine whether the null hypothesis is rejected.

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Check whether the null hypothesis is rejecting or fail to reject by using the critical region method.

Compare the conclusion of critical value method with the P-value method.

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Chapter 8 Solutions

Check whether the null hypothesis is rejecting or fail to reject by using the critical region method. Compare the conclusion of critical value method with the P -value method.

Solution Summary: The author compares the conclusion of critical value method with the P -value method to determine whether the null hypothesis is rejected.

Videos

Check whether the null hypothesis is rejecting or fail to reject by using the critical region method. Compare the conclusion of critical value method with the P-value method.

Want to see the full answer?

Chapter 8 Solutions

Check whether the null hypothesis is rejecting or fail to reject by using the critical region method.

Compare the conclusion of critical value method with the P-value method.