A poll of 2,114 randomly selected adults showed that 94% of them own cell phones. The technology display below shows results from a test of the claim that 91% of adults own cell phones. Using the normal distribution as an approximation to the binomial distribution, and assuming a 0.01 significance level, complete parts (a) through (e).**Test of p = 0.91 vs p ≠ 0.91**| Sample | X | N | Sample p | 95% CI | Z-Value | P-Value ||--------|------|------|----------|-----------------|---------|---------|| 1 | 1987 | 2,114| 0.939924 | (0.926612, 0.953237) | 4.81 | 0.000 |a. Is the test two-tailed, left-tailed, or right-tailed?- [ ] Two-tailed test- [ ] Right-tailed test- [ ] Left-tailed testb. 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 conclude about it?Identify the null hypothesis.- [ ] A. H₀: p > 0.91- [ ] B. H₀: p ≠ 0.91- [ ] C. H₀: p < 0.91- [ ] D. H₀: p = 0.91Choose the correct answer below.- [ ] A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, α.- [ ] B. Reject the null hypothesis because the P-value is greater than the significance level, α.- [ ] C. Reject the null hypothesis because the P-value is less than or equal to the significance level, α.- [ ] D. Fail to reject the null hypothesis because the P-value is greater than the significance level, α. ### Question:**e. What is the final conclusion?**### Answer Options:- **A.** There is sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.- **B.** There is sufficient evidence to support the claim that 91% of adults own a cell phone.- **C.** There is not sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.- **D.** There is not sufficient evidence to support the claim that 91% of adults own a cell phone.

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Answered: A poll of 2,114 randomly selected…

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 2,094 randomly selected adults showed that 95% of them own cell phones. The technology display below results from a test of the claim that 92% 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 (e). Test of p 0.92 vs p 0.92 Sample X 1 Sample p 95% CI Z-Value P-Value 1995 2,094 0.952722 (0.943632,0.961812) 5.52 0.000 ot toilod oE ciaht tailedO
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