Test the claim getting a ticket is independent of the color of your car. Use a significance level of .20. color of car Got a ticket Did not get a ticket red 45 425 white 97 1011 yellow 38 514 blue 89 751 black 85 811 gray 68 815

20 high school Spanish teachers attended an summer course to improve their listening skills.  They took the MLA listening test both before and after the course.  Before the course they had a mean of 27.3 with s=8.04.  After the course they had a mean of 28.75 with s=2.74.  We want to know if the course improves scores. A.) State an appropriate Ho and Ha. B.) Carry out a test. Can you reject at the 5% significance level? at the 1% level?

6) Here is a list of numbers written in order of size. 3 6 x y The numbers have a median of 8 have a mean of 11 Find the value of xand the value of y. x = y =

In want test the claim that the mean number of children that students have is less than 3. The collected data from a sample of students on how many kids each student has is below. Use as significance level of a=.10. (If you need to use ,≤, or use the little symbol above and then choose relationships) 1,3,2,0,0,4,2,1,0,0,0,1,2,0,0,1,4,2,1,0,0,0,0,3 Claim: ,=, ≤, ≥, and then a number) 3 (Two decimals like -4.97) (reject/fail to reject) Ho (One of these , , , and then a number) (This should be O because it says , , ≤, 2, and then a number) (supports/fails to support/rejects/fails to reject) the claim that the mean is less than 3.

Which of the following statements about the histogram are true? Select all that apply.

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Which statement is true with regard to non-response bias? 1.Respondents have strong opinions about the subject matter. 2.Respondents change their answers to influence the results. 3.Respondents give the answer they think the questioner wants. 4.Respondents do not give their honest opinion.

Multiple Comparisons Dependent Variable: RAPEMYTH Tukey HSD Mean Difference (- J) 95% Confidence Interval () MOST WOMEN FIND ME UNATTRACTIVE (J) MOST WOMEN FIND ME UNATTRACTIVE Agree somewhat Std. Error Sig. Lower Bound Upper Bound Agree strongly 2.69258 .56229 .000 1.2458 4.1393 Disagree somewhat 3.10941" .53686 .000 1.7281 4.4907 Disagree strongly 3.85225 .52543 .000 2.5003 5.2042 Agree somewhat Agree strongly -2.69258 .56229 .000 -4.1393 -1.2458 Disagree somewhat .41684 .32901 .584 -.4297 1.2634 Disagree strongly 1.15967" .31001 .001 .3620 1.9573 Disagree somewhat Agree strongly -3.10941 .53686 .000 -4.4907 -1.7281 Agree somewhat -.41684 .32901 .584 -1.2634 .4297 Disagree strongly .74283 .26107 .023 .0711 1.4146 Disagree strongly -3.85225 -1.15967 -74283 Agree strongly .52543 .000 -5.2042 -2.5003 Agree somewhat 31001 .001 -1.9573 -.3620 Disagree somewhat *. The mean difference is significant at the 0.05 level. .26107 .023 -1.4146 -.0711 RAPEMYTH Tukey HSD*. Subset for alpha = 0.05…

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5. Which set of four test scores would have the biggest difference between the mean and the median? O A. 32, 85, 89, 91, 92, 92 O B. 72, 78, 79, 80, 82, 82 O C. 65, 70, 75, 80, 85, 90 O D. 30, 34, 39, 41, 48, 50