15. Consider this upper-tail hypothesis test: Ho: p ≤ 0.70 against Ha: p > 0.70. If a randomsample of n = 800 provides a sample proportion of 0.76, what is the test statistic Z?2.1854782.3841583.9735973.377558A.B.C.D.

Given: H0:p≤0.70Ha:p>0.70 The sample size n is 800. The value of sample proportion is 0.76. The…

Answered: 15. Consider this upper-tail hypothesis…

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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a. What are the null and alternative hypotheses? b. determine the test statistic c. determine the p-value
Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random D samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. n X 5 QUEEN Reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. c. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. b. Construct a confidence interval suitable for testing the claim that males and females have the same mean BMI. 04-4³0 (Round to three decimal places as needed.) Male BMI Female BMI H 41 27.2986 8.038297 1₂ 41 24.2674 4.558194
Suppose you needed to test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Sample 1: n1 = 13, a1 = 24, s1 = 7.55 Sample 2: n2 = 3, x2 = 21.9, s2 = 8.92 Find: (a) The estimated degree of freedom is (b) The standardized test statistic is (use Sample 1 - Sample 2)
Listed below are the lead concentrations in µg/g measured in different traditional medicines. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 16 µg/g. Assume that the sample is a simple random sample. 13.5 17.5 3.5 14.5 14.5 14 16 11 12 16.5 D Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? OA. Ho = 16 µg/g OB. Ho: μ> 16 µg/g H,:μ 16 μg/g - O C. Ho : 4 = 16 pg/g OD. Ho: H=16 µg/g H₁ μ< 16 μg/g H₁ μ#16 μg/g Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.)
1.Determine the test statistic 2. Determine the P-Value
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65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File
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3
A1,

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15. Consider this upper-tail hypothesis test: Ho: p ≤ 0.70 against H₁: p > 0.70. If a random sample of n = 800 provides a sample proportion of 0.76, what is the test statistic Z? 2.185478 2.384158 3.973597 3.377558 A. B. C.