What is the conclusion for this hypothesis test?O A. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.B. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.C. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.D. Reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.Does the background color appear to have an effect on the variation of word recall scores?OA. Yes, the variation of word recall scores appears to be different when the color is changed.B. Yes, the variation of word recall scores appears to be the same when the color is changed.C.No, the variation of word recall scores appears to be different when the color is changed.D. No, the variation of word recall scores appears to be the same when the color is changed. Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall are given below. Use a 0.05 significance level to test the claim that the samples are frompopulations with the same standard deviation. Assume that both samples are independent simple random samples from populations having normal distributions. Does the background color appear to have an effect on the variationof word recall scores?nxS34 15.43 5.97Red BackgroundBlue Background36 12.64 5.42What are the null and alternative hypotheses?A. Ho: 0²/12 #0²/22OB. H₂:0²=0₂2H₁:0² = 0²/2H₁:0² <0²/2OC. H₂:0² = 0²₂2H₁: 0²1 20²2/2OD. H₂:0² = 0²/2H₁:0² *0²/2Identify 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.)

For Red background n1=34 x1=15.43s1=5.97 For Blue background n2=36 x2=12.64s2=5.42

Answered: displayed computer given below. Use ith…

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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llustration 10.44. A calculating machine while calculating mean and standard deviation of 25 readings misread one observation as 36 instead of 26. The following results were given by a machine 6=5.0 and X=D30 %3D What are the correct values of X and o ? CS Scanned with CamScanner
Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall are given below. Use a 0.05 significance level to test the claim that the samples are from populations with the same standard deviation. Assume that both samples are independent simple random samples from populations having normal distributions. Does the background color appear to have an effect on the variation of word recall scores? n X S Red Background 35 15.04 5.97 Blue Background 36 12.93 5.46 What are the null and alternative hypotheses? O A. H₁: 0²₁ = 0²/2 H₁:0²/ ± 0²/2 OB. Ho: 0² #02/2 H₁:0² = 0²/2 O C. H₁: 0²₁2 = 0²/22 OD. H₂:0² = 02²2 H₁ : 0²71 <0²/22 H₁: 021 202²/2 Identify the 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? O A. Reject Ho. There is sufficient evidence to warrant rejection of the…
Exhibit 11-3 The contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounce. We are interested in testing to determine whether the variance of the population is significantly more than .003. Refer to Exhibit 11-3. The p-value for this test is a) .05 b) greater than .10 c) less than .10 d) 1.96
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Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.10significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm 146 137 140 132 132 Left-arm 183 172 179 156 149 In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? Identify the test statistic. Identify the P-value.
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm 143 136 121 129 135 Left arm 167 171 189 139 142 In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? A. H0: μd≠0 H1: μd>0 B. H0: μd=0 H1: μd<0 C. H0: μd=0 H1: μd≠0 Your answer is correct. D. H0: μd≠0 H1: μd=0 Identify the test statistic. t=nothing…
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Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Refer to the accompanying data set. Use a 0.05 significance level to test the claim that women and men have the same mean diastolic blood pressure. a. The test statistic is (Round to two decimal places as needed.) b. The P-value is (Round to three decimal places as needed.)
Longevities of Archbishops and Monarchs 16 Archbishops 16 15 15 16 17 1 18 18 10 13 13 11 13 11 11 17 18 10 18 12 19 17 Monarchs 14 18 14 13 19 16 21 14 16 17 15 16
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.01 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm 147 151 120 132 138 Left arm 177 166 173 145 149 In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? Identify the test statistic. t= (Round to two decimal places as needed.)
P3. Show that the mle of unknown standard deviation when the mean is known is different from the sample standard deviation when the random sample is taken from a normal population characterized by two parameters, mean and variance. Which estimator is unbiased? Justify your answer. Show that a sample mean is a minimum variance unbiased estimator of the mean of a normal population with known variance.

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