(05.02 MC)  The amount people whopay for cable service varie…

(05.02 MC)  The amount people whopay for cable service varies quite a bit, but the mean monthly fee is $142 and the standard deviation is $29. The distribution is not Normal. Many people pay about $76 for basic cable and about $160 for premium service, but some pay much more. A sample survey is designed to ask a simple random sample of 1,500 cable service customers how much they pay. Let x̄ be the mean amount paid. Part A: What are the mean and standard deviation of the sample distribution of x̄? Show your work and justify your reasoning. (4 points) Part B: What is the shape of the sampling distribution of x̄? Justify your answer. (2 points) Part C: What is the probability that the average cable service paid by the sample of cable service customers will exceed $143? Show your work. (4 points) (10 points)

(06.07 MC)  The annual tuition and parent rating of 12 priva…

(06.07 MC)  The annual tuition and parent rating of 12 private schools is shown on the scatterplot. The schools are rated on a scale of 0 to 100. Part A: Describe the association shown in the scatterplot. (4 points). Part B: Give an example of a data point that affects the appropriateness of using a linear regression model to fit all the data. Explain. (4 points)Part C: Give an example of a school that is cost effective and rated highly by parents. (2 points)(10 points)

(05.04 MC)  A city is interested in building a parking gara…

(05.04 MC)  A city is interested in building a parking garage in a certain area. Three hundred randomly selected residents from this area were asked, “Do you support the city’s decision to build a parking garage in your area?” Of the 300 residents interviewed, 203 said no, 7 said yes, and 90 had no opinion. A large-sample z-confidence interval, p̂ ± z * , was constructed from these data to estimate the proportion of the residents who support building a parking garage in a certain area. Which of the following statements is correct for this confidence interval? (5 points)

(05.02 LC)  Given a population mean of 41.8 with a standard…

(05.02 LC)  Given a population mean of 41.8 with a standard deviation of 5.2 and a sample size of 9, answer these questions: Part A: What is the standard deviation of the sampling distribution of x̄? Show your work. (5 points) Part B: What does the sample size need to be if you want the standard deviation of the sampling distribution of x̄ to be 2.6? Show your work. (5 points) (10 points)