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 thatthe samples are from populations with the same standard deviation. Assume that both samples are independent simple random samples from populations having normal distributions. Does thebackground color appear to have an effect on the variation of word recall scores?Red BackgroundBlue BackgroundWhat are the null and alternative hypotheses?OA H₂:0²=0²₂2H₁: 0²1 20²2nXS34 15.35 5.9437 12.49 5.43*C. H₂:0² = 0²/c.H₁:0² #0²/2Identify the test statistic.F = (Round to two decimal places as needed.)***B. H₂:0² = 0²H₁:0² <0²OD. H₂:0² #0²/2H₁:0² = 0²

Consider population of Red background scores as and that of Blue background scores as .Sample sizes…

Answered: background color appear to have an…

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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Homework: Chapter 9 Homework Save Score: 0 of 1 pt 17 of 28 (12 complete) v HW Score: 24.21%, 6.78 of 28 pts X Instructor-created question E Question Help Course Note Packet Chapter 9 Page 1-6 and 10 In a one-tail hypothesis test where you reject Hn only in the lower tail, what is the p-value if ZSTAT = - 2.59? Click here to view page 1 of the Normal table. Click here to view page 2 of the Normal table. The p-value is (Round to four decimal places as needed.)
Test the claim that the proportion of men who own cats is smaller than 60% at the 0.01 significance level. Based on a sample of 300 people, 51% owned catsThe test statistic is: _______ (to 2 decimals)The critical value is: _______ (to 2 decimals)
p value for B please
Week 9 – Hypothesis Testing oExamples of null and alternative hypotheses that are one and two sided, explaining how to distinguish between them. oExamples of z-test for proportion, z-test for mean, t-test for mean with explanations of when you use each one and why, with computations. oInterpretations of p-values for each of the above with context
Test the claim that the mean GPA of night students is larger than 2 at the 0.10 significance level.The null and alternative hypothesis would be: _______ The test is:right-tailed left-tailed two-tailed Based on a sample of 30 people, the sample mean GPA was 2.02 with a standard deviation of 0.07The p-value is: ____ (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
9.63 What is meant by the power of a test? 9.64 What is the difference between a one-tail test and a two-tail test? 9.65 What is meant by a p-value?
What is the value of F? a. 111 b. 45.12 c. .02 d. 7.74
Test the claim that a six-sided dice is fair at the 0.05 significance level. Complete the table. Round all answers to three decimal places. Number rolled on dice ObservedFrequency ExpectedFrequency (O−E)2E(O-E)2E 1 25 2 24 3 10 4 9 5 7 6 6 H0H0: p₁ = p₂ = p₃ = p₄ = p₅ = p₆H1H1: at least one is different Original claim = Select an answer H₀ H₁ Enter the critical value, along with the significance level and degrees of freedom χ2χ2(αα,df) below the graph. (Graph is for illustration only. No need to shade.) X2Χ2(,) = (Round to three decimal places.) Test Statistic = (Round to three decimal places.)p-value=(Round to four decimal places.) Decision: Select an answer Fail to reject the null hypothesis Reject the null hypothesis Accept the alternative hypothesis Accept the null hypothesis Conclusion: Select an answer There is not sufficient evidence to warrant rejection of There is not enough evidence to support There is sufficient…
You are conducting a test of independence for the daim that there is an association between morning beverage and age. Juice Coffee Pop Tea 5 32 | 43 less than 25 19 18 25 or older 27 30 2 What is the chi-square test-statistic and the corresponding p-value for this data? [three decimal accuracy] p-value = [three decimal accuracy]
HUMOROUS NONHUMOROUS 1. Underline the type of t-test (Independent, Repeated, one-sample) 4 5 3 2 5 4 3 a. Do the results indicate a significant difference in the recall of humorous versus nonhumorous sentences? Use a two-tailed test with 3 7 4 6 2 b. Calculate the estimated Cohen's d, F-max and r2 to measure the effect size. a = 0.05. 6 2 4 c. Use the 4 steps in hypothesis testing. 5 4 4 3 4 3 5 3 2 6 3 4 LO LO
Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 73.5 88 63.9 85.5 62.7 65 83.2 61.9 88 62.7 Test grades are believed to be normally distributed.Use a significance level of 5%. State the alternative hypothesis: HA:HA: μ>65μ>65 μ<65μ<65 μ≠65μ≠65 State the mean of the sample: State the standard error of the sample means: State the test statistic: t=t= State the p-value: Decision: Fail to reject the null hypothesis. Reject the null hypothesis.
Need B please

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