Which of the following is true about Chi-square tests and F tests? [f] O Both measure the discrepancies between expected and observed frequencies Both have numerator degrees of freedom and denominator degrees of freedom O Both have test statistics between 0 and infinity O Both have test statistics between negative infinity and infinity O Both have test statistics between 0 and 1

(d) Annual salaries of the employees at a Fortune 500 company where only a few high level executives earn much higher salaries than the all other employees. The distribution is expected to be: O left skewed O symmetric O right skewed A typical observation is best represented by the: O mean O median The variability in the observations is best measured by the: O IQR O standard deviation

The chi-square statistic for these data is x = 8.134. Which of the following intervals contains the P- value for this test? Color preference Pink Blue Yellow Green Total Female 48 24 18 30 120 Gender Male 55 34 18 116 Total 103 58 27 48 236 0.025 0.1

None

Which of the following statements about hypothesis testing is false? A. A Type I error is the chance that the researcher rejects the null hypothesis when in fact the null hypothesis is true. B. The test will never confirm the null hypothesis, only fail to reject the null hypothesis. C. In both the one - tailed and two-tailed tests, the rejection region is one contiguous interval on the number line. D. The rejection region is always given in units of standard deviations from the mean.

Consider the following normal curves, 0.4- Curve 1 0.3- 0.2- 0.1- Curve 2 00 12 12 18 which of the following is true: O The two curves have equal medians. OThe two curves have equal means. O Curve 2 has a larger standard deviation. O The two curves have equal standard deviations. O Curve 1 has a larger mean. O None of the above. Submit Question O Type here to search F2 F4 F5 F6 F10 F7 F8 %23 24 & 4. 7 8. Q W R Y U S D J K LL

You are conducting a test of independence for the claim that there is a relationship between favorite ice cream flavor and gender. Use a significance level of .01. Vanilla Chocolate Strawberry Male | 32 67 37 Female 24 40 25 The expected observations for this table would be (Round to 3 decimal places.) Vanilla Chocolate Strawberry Male Female At the .01 significance level, what is the critical chi-square for this data? (Round to 3 decimal places.) с What is the chi-square test-statistic for this data? (Round to 3 decimal places.) What can you conclude about Gender and Favorite Ice Cream Flavor? Gender and Ice Cream Flavor are Dependent O Gender and Ice Cream Flavor are Independent

Is race a factor in the number of times a month a person eats out? The table below shows data that was collected. Hispanic White Black Asian 10 6 14 14 9 8 9 15 5 10 1 4 12 0 10 6 10 4 9 13 5 4 9 5 6 14 9 1 6 2 1 8 7       Assume that all distributions are normal, the four population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of α=0.01α=0.01.H0: μ1=μ2=μ3=μ4H0: μ1=μ2=μ3=μ4Ha:Ha: At least two of the means differ from each other. For this study, we should use              The test-statistic for this data =  (Please show your answer to 4 decimal places.) The p-value for this sample =  (Please show your answer to 4 decimal places.)