Question 12:Previous data shows that 55% of adult males lose their hair. You believe the actual percentage isdifferent. To test your theory, you collect data from a sample of 120 adult males and find that 72 arelosing their hair. Test your hypothesis at the 0.05 level of significance.Part A: State the null and alternate hypotheses.Part B: State and sketch the rejection region.Part C: Determine the test statistic.Part D: Determine the p-value.Part E: Draw a conclusion.

We have given that Sample size n = 120 Favorable cases x = 72 Sample proportion p^=x/n Population…

Answered: Question 12: Previous data shows that…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A news article that you read stated that 51% of voters prefer the Democratic candidate. You think that the actual percent is larger. 139 of the 262 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: Ho: ? μ p Select an answer = ≠ > < (please enter a decimal) H1: ? p μ Select an answer < = ≠ > (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject fail to reject accept the null hypothesis. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly larger 51% at αα = 0.10, so there is sufficient…
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