3. Technology is dramatically changing the way we communicate. In 2014, a survey of 880 U.S. householdsshowed that 149 of them use e-mail. At the 5% significance level, test the claim that more than 15% of U.S.households use e-mail.4. The Genetics and IVF Institute conducted a clinical trial of the XSORT method designed to increase theprobability of conceiving a girl. 325 babies were born to parents using the XSORT method, and 295 of themwere girls. At the 1% significance level, test the claim that with this method, the probability of a baby being agirl is greater than 50%.

Sample size (n) = 880Let X be a household that uses e-mailX=149Level of significance = 0.05Note:…

Answered: 3. Technology is dramatically changing…

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 study was conducted to determine the proportion of people who dream in black and white instead of color. Among 294 people over the age of 55, 63 dream in black and white, and among 300 people under the age of 25, 19 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. Ho: P₁ = P2 H₁: P₁ P2 D. Ho: P₁ P2 H₁: P₁ P2 OB. Ho: P1 P2 H₁: P₁ P2 O E. Ho: P1 H₁: P₁ P2 P2 O C. Ho: P₁ P2 H₁: P₁ = P2 OF. Ho: P₁ P2 H₁: P₁ P2
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A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 295 people over the age of 55, 64 dream in black and white, and among 312 people under the age of 25, 13 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. Question content area bottom Part 1 a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1=p2 H1: p1<p2 B. H0: p1≠p2 H1: p1=p2 C. H0: p1=p2 H1: p1≠p2 D. H0: p1=p2 H1: p1>p2 Your answer is correct. E. H0: p1≤p2 H1: p1≠p2 F. H0: p1≥p2 H1:…
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3. Technology is dramatically changing the way we communicate. In 2014, a survey of 880 U.S. households showed that 149 of them use e-mail. At the 5% significance level, test the claim that more than 15% of U.S. households use e-mail.