A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test atthe 10% significance level.x=35, n=21, a=5, Ho: μ = 34, H₂: μ#34The test statistic is z =(Round to two decimal places as needed.)The P-value is(Round to three decimal places as needed.)the null hypothesis. The datasufficient evidence to conclude that the mean is

GivenMean(x)=35sample size(n)=21standard deviation(σ)=5The null and alternative hypothesis…

Answered: A sample mean, sample size, and…

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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Use the technology display to make a decision to reject or fail to reject the null hypothesis at a = 0.10. Make the decision using the standardized test statistic and using the P-value. Assume the sample sizes are equal. A Click the icon to view the technology display. - X Choose the correct answer below. Technology Output O A. Reject the null hypothesis because the P-value is greater than the level of significance. O B. Fail to reject the null hypothesis because the P-value is greater than the level of significance. 2-Samp2Test O C. Reject the null hypothesis because the P-value is less than the level of significance. z-2.592498242 p-0.0095281668 x1 -2300 x2 - 2225 O D. Fail to reject the null hypothesis because the P-value is less than the level of significance. nl -140 Print Done
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Reading Program Summer reading programs are very popular with children. At the Citizens Library, Team Ramona read an average of 23.2 books with a standard deviation of 5.1. There were 16 members on this team. Team Beezus read an average of 26.1 books with a standard deviation of 2.8. There were 19 members on this team. Did the variances of the two teams differ? Use =α0.10. Use the traditional method of hypothesis testing and let σ1be the standard deviation for Team Ramona. Assume that all variables are normally distributed. State the hypotheses and identify the claim. H0: Claim or not a claim H1: Claim or not a claim This Hypothesis test is a one-tailed or two-tailed test? Find the Critical Value: Round to at least two decimal places. Compute the test Value: Make the decision to reject or accept the null hypothesis. Summarize the results. Is there enough evidence to support the claim.
Test the claim below about the mean of the differences for a population of paired data at the level of significance a. Assume the samples are random and dependent, and the populations are normally distributed. Claim: <0; a=0.05. Sample statistics: d= 1.6. sy =3.7, n=12 Identify the null and alternative hypotheses. Choose the correct answer below. OA Ho: 14=0 H₁₂-10 OC. Ho: Hy so H₁₂:0 OE HO H₂: P20 The test statistic is t= ☐ (Round to two decimal places as needed.) B. Ho: Hy 20 H: <0 D. Ho: Hy #0 H₂: H₁₂ =0 OF H₂: 10 H.: 150
Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is μ=16.00 Mbps. The sample size is n=14 and the test statistic is t=2.325. P-value= nothing (Round to three decimal places as needed.)
Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. Some governments have a safety limit for cadmium in dry vegetables at 1.9 parts per million (ppm). A hypothesis test is to be performed to decide whether the mean cadmium level in a certain mushroom is less than the government's recommended limit. Complete parts (a) through (c) below. a. Determine the null hypothesis. HoiH ppm (Type an integer or a decimal. Do not round.)
Treatment Placebo 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 0.10 significance level for both parts. H1 H2 In 25 37 2.39 2.61 IS 0.57 0.88 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? O A. Ho: H1 = 42 H1: H1 > H2 B. Ho: H1
Reading Program Summer reading programs are very popular with children. At the Citizens Library, Team Ramona read an average of 23.2 books with a standard deviation of 5.8. There were 16 members on this team. Team Beezus read an average of 26.1 books with a standard deviation of 4.0. There were 23 members on this team. Did the variances of the two teams differ? Use =α0.05. Use the traditional method of hypothesis testing and let σ1 be the standard deviation for Team Ramona. Assume that all variables are normally distributed. State the hypotheses and identify the claim. H0: Claim or not a Claim H1: Claim or not a claim This Hypothesis test is a one-tailed or two-tailed test. Find the Critical Value(s): Compute the test Value: Make the decision: Summarize the results.
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Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is μ=18.00 Mbps. The sample size is n=12 and the test statistic is t=1.129. P-value= ____
Test the claim below about the mean of the differences for a population of paired data at the level of significance a. Assume the samples are random and dependent, and the populations are normally distributed. Claim: H. 20; a = 0.05. Sample statistics: d= - 2.2, s, = 1.5, n= 14 Identify the null hypothesis by writing its complement. OB. Ho: Ha s0 OA Ho: Ha #0 H: Ha =0 OD. Ho: Ha0 VE. Ho: Ha20 Ha: Hd <0 The test statistic is t= (Round to two decimal places as needed.)
A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 1% significance level. x=34, n=20, σ=7, H0: μ=37, Ha: μ≠37 The test statistic is z=___________ (Round to two decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice. (Round to two decimal places as needed.) A. The critical values are ±zα/2=±_________ B. The critical value is zα=____________ C. The critical value is −zα=____________ ________________ (Do not reject, Reject) the null hypothesis. The data ____________ ( provide, do not provide) sufficient evidence to conclude that the mean is ______________ (not equal to 37, less than 37, equal to 37, greater than 37)

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