**From previous studies, it is concluded that 39% of phone numbers in a certain city are unlisted. A researcher claims it has decreased and decides to survey 100 adults. Test the researcher’s claim at the α = 0.05 significance level.****Preliminary:**a. Is it safe to assume that n ≤ 0.05 of all subjects in the population?- ○ No- ○ Yesb. Verify \( n\hat{p}(1 - \hat{p}) \geq 10 \). Round your answer to one decimal place.\[ n\hat{p}(1 - \hat{p}) = \underline{\hspace{3cm}} \]**Test the claim:**a. Express the null and alternative hypotheses in symbolic form for this claim.- \( H_0: \underline{\hspace{5cm}} \)- \( H_a: \underline{\hspace{5cm}} \) *Use the following codes to enter the following symbols:*- \(\ge\) enter >=- \(\le\) enter <=- \(\neq\) enter !=b. After surveying 100 adult Americans, the researcher finds that 45 phone numbers in a certain city are unlisted. Compute the test statistic. *Round to two decimal places.*\[ z = \underline{\hspace{3cm}} \]c. What is the \( p \)-value? *Round to 4 decimals.*\[ p = \underline{\hspace{3cm}} \]d. Make a decision based on α = 0.05 significance level.- ○ Reject the null hypothesis.- ○ Do not reject the null hypothesis.e. What is the conclusion?- ○ There is not sufficient evidence to support the claim that 39% of phone numbers in a certain city are unlisted has decreased.- ○ There is sufficient evidence to support the claim that 39% of phone numbers in a certain city are unlisted has decreased.**Note:** The provided text appears to guide through hypothesis testing, including calculating test statistics and p-values while making decisions based on the results.

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From previous studies, it is concluded that 39% of phone numbers in a certain city are unlisted. A researcher claims it has decreased and decides to survey 100 adults. Test the researcher's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n < 0.05 of all subjects in the population? O No O Yes b. Verify np (1 -p) > 10. Round your answer to one decimal place.

From previous studies, it is concluded that 39% of phone numbers in a certain city are unlisted. A researcher claims it has decreased and decides to survey 100 adults. Test the researcher's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n < 0.05 of all subjects in the population? O No O Yes b. Verify np (1 -p) > 10. Round your answer to one decimal place.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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