A poll of 2,166 randomly selected adults showed that 84% of them own cell phones. The technology display below results from a test of the claim that 93% of adults own cell phones. Use the normaldistribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e).@2Test of p=0.93 vs p *0.93Sample X1N2,166SWand1830a. Is the test two-tailed, left-tailed, or right-tailed?O Left-tailed testO Right tailed testO Two-tailed test1272b. What is the test statistic?The test statistic is(Round to two decimal places as needed.)c. What is the P-value?XThe 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.#38.0F3ESample p0.844875Dс$4aF4R95% CIF(0.824839,0.864912)V%5TG6BtvZ-Value-15.53YMacBook AirHP-Value0.000A 87 A&7NF7CUJ*8MDIII(9K8FOO<OLcommandF10P>.-:;optionF11{[?+=111I4)samF12}1Nextdeletere

X = 1830 N = 2166 Sample P =0.844875 95% CI =(0.824839,0.864912) Z-value = -15.53 P-value = 0.000

Answered: A poll of 2,166 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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Listed below are the lead concentrations (in ug/g) measured in different Ayurveda medicines. Ayurveda is a traditional medical system commonly used in India. The lead concentrations listed here are from medicines manufactured in the United States. Assume that a simple random sample has been selected. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 14.0 µg /g. 2.96 6.45 5.99 5.51 20.53 7.45 11.97 20.46 11.52 17.54 D Identify the null and alternative hypotheses. Ho: H1: (Type integers or decimals. Do not round.) Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value. (Round to three decimal places as needed.) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. V the null hypothesis. There sufficient evidence at the 0.01 significance level to V the claim that the mean lead concentration for all Ayurveda medicines…
A study reported that finger rings increase the growth of bacteria on health-care workers’ hands. Research suggests that 31 percent of health-care workers who wear rings have bacteria on one or both hands. Suppose that independent random samples of 100 health-care workers wearing rings is selected. What is the standard deviation of the sampling distribution of the sample proportions of health-care workers having bacteria on one or both hands? A. 100 B. 0.0462 C. 0.69
A statistics teacher claims that, on the average, 15% of her students get a grade of A, 15% get a B, 25% get a C, 15% get a D, and 30% get an F. The grades of a random sample of 130 students were recorded. The following table presents the results. Test the hypothesis that the grades follow the distribution claimed by the teacher. Use the 0.05 level of significance and the P-value method with the TI-84 Plus calculator. Grade B C D F Observed 8. 26 31 24 41 Send date to Excel Part: 0/5 Part 1 of 5 (a) How many of the students in the sample got an A? How many got a D? The number of students who got an A is The number of students who got a D is
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calculate ss variance and standard deviation for the following population of N=5 scores: 2,13,4,10,6
Listed below are the lead concentrations (in µg/g) measured in different Ayurveda medicines. Ayurveda is a traditional medical system commonly used in India. The lead concentrations listed here are from medicines manufactured in the United States. Assume that a simple random sample has been selected. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 14.0 µg/g. 5.98 5.50 20.54 3.03 6.46 Identify the null and alternative hypotheses. Ho: H 14 H₁: μ 14 (Type integers or decimals. Do not round.) Identify the test statistic. = (Round to two decimal places as needed.) 7.45 12.01 20.47 11.48 17.53 D S Vi I. (1,0) More
A statistics teacher claims that, on the average, 10% of her students get a grade of A, 15% get a B, 20% get a C, 35% get a D, and 20% get an F. The grades of a random sample of 110 students were recorded. The following table presents the results. Test the hypothesis that the grades follow the distribution claimed by the teacher. Use the 0.01 level of significance and the P-value method with the TI-84 Plus calculator. Grade A B C D F Observed 7 8 26 39 30 Find the P-value. Round the answer to at least four decimal places.
For a two-tailed test with a sample size of 17 and a 0.20 level of significance, the t value is O a. 1.337 O b. 0.865 O c. 1.230 d. 1.734 O
6
A statistics teacher claims that, on the average, 5% of her students get a grade of A, 15% get a B, 30% get a C, 30% get a D, and 20% get an F. The grades of a random sample of 130 students were recorded. The following table presents the results. Test the hypothesis that the grades follow the distribution claimed by the teacher. Use the 0.01 level of significance and the P-value method with the TI-84 Plus calculator. Grade A B C D F Observed 6 7 43 42 32 How many of the students in the sample got a D? How many got a B? The number of students who got a D is . The number of students who got a B is .
A random sample of 50 pieces of candy from a bag of assorted types is examined. Which of the following types of candy contributes the most to the chi-square statistics and why?
3.

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