aim that uof word recall are given below. Use a 0.05 significance level to test thewith the same standard deviation. Assume that both samples are independent simple random samples frompopulations having normal distributions. Does the background color appear to have an effect on the variation ofword recall scores?Red BackgroundBlue BackgroundUC. Ho o 02H₁ 0²-02nXS3415.075.9836 12.94 5.43UD. Ho o=0H₁ 0² 202Identify the test statistic.F=1.21 (Round to two decimal places as needed)Use technology to identify the P-valueThe P-value is (Round to three decimal places as needed)What is the conclusion for this hypothesis test?13OA. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are frompopulations with the same standard deviationOB. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the samples are frompopulations with the same standard deviation.

The first sample standard deviation for red background is 5.98, and second sample standard deviation…

Answered: of word recall are given below. Use a…

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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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? Red Background Blue Background What are the null and alternative hypotheses? OA H₂:0²=0²₂2 H₁: 0²1 20²2 n X S 34 15.35 5.94 37 12.49 5.43 *C. H₂:0² = 0²/ c. H₁:0² #0²/2 Identify the test statistic. F = (Round to two decimal places as needed.) *** B. H₂:0² = 0² H₁:0² <0² OD. H₂:0² #0²/2 H₁:0² = 0²
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. Treatment Placebo μ μ1 μ2 n 32 34 x 2.36 2.67 s 0.96 0.52 a) Test the claim that the two samples are from populations with the same mean. The test statistic, t, is ___. The P-value is ____. b) Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.
Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05 significance level in testing the null hypothesis that the different samples come from populations with the same mean. What can you conclude about the equality of the population means? Source DF S MS Factor 3 13.500 4.500 5.17 0.011 Error 16 13.925 0.870 Total 19 27.425 O A. Fail to reject the null hypothesis since the p-value is greater than the significance level. O B. Fail to reject the null hypothesis since the p-value is less than the significance level. O C. Reject the null hypothesis since the p-value is less than the significance level. O D. Reject the null hypothesis since the p-value is greater than the significance level. Click to select your answer. tv w MacBook Air F10 F1 F9 000 F8 吕0 F3 000 F4 F5 F6 F7 esc F1 F2 $ % & @ 7 8 9 2 5 * 00 #3
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A SRS of 18 statistics examinations was taken from a large normal population. The average score in the sample was 76.6 with a sample variance (not sample standard deviation) of 51.84. We are interested in determining whether the average grade of the population is significantly different from 70. How many degrees of freedom are associated with the t-distribution for this test? Group of answer choices 15 18 17 16
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K 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? is Right arm Left arm 2 In this example, Hd 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? S OC. Ho: Hg = 0 H₁: Hg 0 OD. Ho: H0 Mỹ, không + J 8 D-II 1 M ( 9 K 1 ; x w { ? option Check answer 11 1 1 delete retu
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 15.86 5.95 Blue Background 37 12.11 5.43 What are the null and alternative hypotheses? what is the test statistic? (F =?) what is the P-value? does the background color appear to have an effect on the variation of word recall scores?
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? Red Background Blue Background What are the null and alternative hypotheses? OA. H₂:0² = 0²/2 H₁:0² 20²/2 n Xx S 34 15.35 5.94 37 12.49 5.43 *C. H₂:0² = 0²/2 H₁:0² #0²/2 Identify the test statistic. F = 1.20 (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.) *B. H₂: o² = 0² H₁:0² <0? OD. H₂:0² #0²/2 H₂₁:0² = 0²
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 0.05 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H₁ H2 H₁ H₁ H₂ The test statistic, t, is -1.45. (Round to two decimal places as needed.) The P-value is 0.153. (Round to three decimal places as needed.) State the conclusion for the test. C OB. Ho: H₁
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 0.05 significance level X for both parts. Treatment Placebo H1 H2 In 31 40 2.35 2.66 0.67 0.95 ... C. Ho: H1 = H2 H1: Hy> H2 'D. Ho:H1 =H2 H,: H1 # H2 The test statistic, t, is - 1.61 . (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)
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 Treatment Placebo μ μ1 μ2 n 28 32 x 2.35 2.61 s 0.95 0.66 What is the null and alternative hypotheses? The test statistic, t, is? The P-value is? Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean. ?<μ1−μ2<?

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