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Sample X Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed) c. What is the P-value? The P-value isO (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis OA. Hp>09 OB. H p<09 OC. H pr09

Sample X Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed) c. What is the P-value? The P-value isO (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis OA. Hp>09 OB. H p<09 OC. H pr09

MATLAB: An Introduction with Applications
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 poll of 2,145 randomly selected adults showed that 88% of them own cell phones. The technology display below results from a test of the claim that 90% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (0). Test of p= 0.9 vs p#0.9 N Sample x Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed ) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you condlude about it? Identify the null hypothesis OA. Ha: p>0.9 OB. H p<09 OC. H pr09
Transcribed Image Text:A poll of 2,145 randomly selected adults showed that 88% of them own cell phones. The technology display below results from a test of the claim that 90% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (0). Test of p= 0.9 vs p#0.9 N Sample x Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed ) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you condlude about it? Identify the null hypothesis OA. Ha: p>0.9 OB. H p<09 OC. H pr09
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