research involving 11 people, 7 preferred Product X, 3 preferred Product Y, and 1 expressed no preference. A sign test is selected using the 0.05 level of significance. The null hypothesis is H0: π =

Ch 10 Research suggests that playing action video games might improve hand-eye coordination (Li, Chen & Chen, 2016). Researchers compared 16 participants who played video games frequently to 16 participants who rarely or never played video games on participant’s errors using a joystick to play a game. Use α = .01 2tail to evaluate the statistic. The results of the SPSS statistical analyses are below: **attached as images** a. State the hypotheses b. Show how the t was calculated using the values from the SPSS printout. c. What is Cohen’s d? d. Show how the 95% confidence interval was calculated. e. State the conclusion in APA format

Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown in Table 11.55. Conduct a test for homogeneity at a 5% level of significance.    French Toast Pancakes Waffles Omelettes Men 47 35 28 53 Women 65 59 55 60

Suppose that in a random selection of 100colored​ candies, 25​%of them are blue. The candy company claims that the percentage of blue candies is equal to 28​%. Use a 0.05 significance level to test that claim.   a) Identify the null and alt hypothesis for this test.   b) Identify the test statistic   c) Identify the p-value   d) Identify the conclusion

A peony plant with red petals was crossed with another plant having streaky petals. A nursery owner states that 75% of the offspring resulting from this cross will have red flowers. To test this claim, 100 seeds from this cross were collected and germinated, and 67 plants had red petals. What hypotheses should you use to test the nursery owner's claim? Ho: p = .75 vs. Ha: p * .75 Ho: p = .67 vs. Ha: p = .67 O Ho: p.75 vs. H₂: p= .75 Ho: p ≥.75 vs. Ha: p .75 O A 4. D W P

Q2: A newspapers published an article about a study in which researchers subjected laboratory gloves to stress. Among 277 vinyl gloves, 56% leaked viruses. Among 277 latex gloves, 10% leaked viruses . Using the accompanying display of the technology results , and using a 0.10 significance level, test the claim that viyl gloves have a better virus leak than latex gloves. Let viyl gloves be population 1. A. What are the null and alternative hypotheses?  B. Identify the test statistic  C. Identify the p-value  p- value =___ D.what is the conclusion for the test

A random sample of 100 dog owners is asked to state the animal's gender and favorite toy. The results are recorded in the table. Gender Ball Rope Stuffed Animal Male Female 1024 28 12 16 10 A chi-square test is used to test the null hypothesis that gender and preferred toy are independent. Which of the following statements is correct? O Fail to reject Ho at the 0.05 significance level. ◇ Fail to reject Ho at the 0.01 significance level. ◇ Reject Ho at the 0.01 significance level. Reject Ho at the 0.005 significance level. ◇ Reject Ho at the 0.001 significance level.

Researchers collected data on the numbers of hospital admissions resulting from motor vehicle​ crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a​ Friday, the numbers of hospital admissions from motor vehicle crashes are not affected.

An airline operates a call center to handle customer questions and complaints. The airline monitors a sample of calls to help ensure that the service being provided is of high quality. Ten random samples of 100 calls each were monitored under normal conditions. The center can be thought of as being in control when these 10 samples were taken. The number of calls in each sample not resulting in a satisfactory resolution for the customer is as follows. 4 5 3 2 3 3 46 4 8 (a) What is an estimate of the proportion of calls not resulting in a satisfactory outcome for the customer when the center i in control? 0.0042 (b) Construct the upper and lower limits for a p chart for the manufacturing process, assuming each sample has 100 calls. (Round your answers to four decimal places.) UCL = 0.0655 LCL = 0.0558 (c) With the results of part (b), what conclusion should be made if a sample of 100 has 13 calls not resulting in a satisfactory resolution for the customer? Since the sample proportion =…