You wish to test the following claim (Ha) at a significance level of a - 0.02.Ho Pi P2Ha Pi P2You obtain 75.1% successes in a sample of s1ze n1sample of size n2you should use the normal dıstribution as an approximation for the binomial distribution.618 from the first population. You obtain 71.1% successes in a629 from the second population. For this test, you should NOT use the continuity correction, andWhat is the test statistic for this sample? (Report answer accurate to three decimal places.)1.593test statistic=What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = 0.1115The p-value 1s..less than (or equal to) ogreater than aThis test statistic leads to a decision toN@

Given Data and calculation is shown below

Answered: You wish to test the following claim…

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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The accompanying table gives results from a study of words spoken in a day by men and women. Assume that both samples are independent simple random samples from populations having normal distributions. Use a 0.05 significance level to test the claim that the numbers of words spoken in a day by men vary more than the numbers of words spoken in a day by women. n x s Men 185 15,667.8 8,632.5 Women 212 16,215.5 7,301.2 What are the null and alternative hypotheses? A. H0: σ21≠σ22 H1: σ21=σ22 B. H0: σ21=σ22 H1: σ21>σ22 C. H0: σ21=σ22 H1: σ21<σ22 D. H0: σ21=σ22 H1: σ21≠σ22 Identify the test statistic. F= (Round to two decimal places as needed.) Use technology to identify the P-value. The P-value is (Round to three decimal places as needed.) What is the conclusion for this hypothesis test? A.Reject H0. There is insufficient evidence to support the claim that…
Dala on the eights (Ib) o the contents of cans of diet soda versus the contents of cans of the regular version of the soda is summarized to the right. Assume that the two samples are independent simple random 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 0.01 significance level for both parts. Diet Regular H2 27 27 0.79037 lb 0.80399 lb 0.00449 Ib 0.00756 lb UA. Ho P1= P2 B. Ho H1 7 µ2 D. Ho H1= H2 O C. Ho: H1 =H2 H1: 1 > H2 Hyi Hy
2. Which of the following are practical ways to assess normality of the residuals? Select all that apply a. Normal probability plots (the R command is qqnorm() b. Anderson-Darling tests. c. Shapiro-Wilks tests. d. Boxplots e. Just ask if they are normal, or, guess, because, who really cares?
A poll of 2,188 randomly selected adults showed that 90% of them own cell phones. The technology display below results from a test of the claim that 94% 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 = 0.94 vs p *0.94 Sample X N 1 2,188 1969 Sample p 0.899909 b. What is the test statistic? a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Right tailed test Left-tailed test The test statistic is -7.90 . (Round to two decimal places as needed.) c. What is the P-value? 95% CI The P-value is. (Round to three decimal places as needed.) (0.887333,0.912484) Z-Value - 7.90 P-Value 0.000
10.2.26-1 Question Help In a survey, 43% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so he randomly selected 160 pet owners and discovered that 65 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the a =0.01 level of significance. Because npo (1- Po) = 10, the sample size is V 5% of the population size, and the sample the requirements for testing the hypothesis satisfied. (Round to one decimal place as needed.)
14 A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random 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 n 0.10 significance level for both parts. X a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H=H2 H₁: H₁ H₂ The test statistic, t, is (Round to two decimal places as needed.) The P-value is. (Round to three decimal places as needed.) State the conclusion for e test. GELER OB. Ho: H1 H2 H₁: Hy > H₂ Treatment Placebo Hy 1/2 OD. Ho: H₁ H₂ H₁: Hy
What is the cut off score on a Chi-Square distribution in a Goodness of Fit Chi Square Test when the variable has 6 categories and a sample size of 20? Assume a significance level=.05. a. 5 b. 12.59 c. 6 d. 11.0
A poll of 1004 teens aged 13 to 17 showed that 57% of them have made new friends online. Use a 0.01 significance level to test the claim that half of all teens have made new friends online. Use the P-value method. Use the normal distribution as an approximation to the binomial distribution. C Let p denote the population proportion of all teens aged 13 to 17 who have made new friends online. Identify the null and alternative hypotheses. Ho: P H₁: p (Type integers or decimals. Do not round.) Identify the test statistic. 2=0 (Round to two decimal places as needed.) Identify the P-value. 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. the null hypothesis. There ▼sufficient evidence to the claim that half of all teens have made new friends online.
EXAMPLE 2 Fewer Than 30% of Adults Have Sleepwalked? Using the same sleepwalking data from Example 1 (n = 20,000 and ôi = 28.5% would a reporter be justified in stating that “fewer than 30% of adults have sieef - walked"? Let's use a 0.05 significance level to test the claim that for the adult popu- lation, the proportion of those who have sleepwalked is less than 0.30.
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A poll of 2,049 randomly selected adults showed that 96% of thern own cell phones. The technology display belon results from a test of the claim that 95% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p= 0.95 vs p$0.95 Sample X 1962 2,049 Sample p 0.957540 95% CI Z-Value (0.946066,0.969014) 147 P.Value 0.117 a. ls 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 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. O A. Ho: p< 0.95 O B. Ho: p*0.95 O C. Ho: p> 0.95 O D. Ho: p= 0.95 Choose the correct answer below. O A. Reject the null hypothesis because the P-value is…

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