A movie theater company wants to see if there is a difference in the average movie ticket sales in San Diego and Portland per week. They sample 20 sales from San Diego and 20 sales from Portland over a week. Test the claim using a 5% level of significance. Assume the variances are unequal and that movie sales are normally distributed. San  Diego Portland 221     209 221     214 206     223 213      221 226      218 243      214 182      222 229      220 214      223 233      222 231      233 217      219 219      226 234      226 239      219 235      228 211      211 239      216 221      219 234      209 The Hypotheses for this problem are: H0: μ1 = μ2 H1: μ1  μ2 a) Find the p-value. Round answer to 4 decimal places. Answer: ? b) Choose the correct decision and summary based on the above p-value. Reject H0. There is no evidence that the average movie ticket sales in San Diego and Portland per week differ. Do not reject H0. There is no evidence that the average movie ticket sales in San Diego and Portland per week differ. Reject H0. There is evidence that the average movie ticket sales in San Diego and Portland per week differ. Do not reject H0. There is evidence that the average movie ticket sales in San Diego and Portland per week differ.

A contributor for the local newspaper is writing an article for the weekly fitness section. To prepare for the story, she conducts a study to compare the exercise habits of people who exercise in the morning to the exercise habits of people who work out in the afternoon or evening. She selects three different health centers from which to draw her samples. The 57 people she sampled who work out in the morning have a mean of 4.8 hours of exercise each week. The 56 people surveyed who exercise in the afternoon or evening have a mean of 4.2 hours of exercise each week. Assume that the weekly exercise times have a population standard deviation of 0.8 hours for people who exercise in the morning and 0.3 hours for people who exercise in the afternoon or evening. Let Population 1 be people who exercise in the morning and Population 2 be people who exercise in the afternoon or evening.   Step 1 of 2 :   Construct a 95% confidence interval for the true difference between the mean amounts…

Periodically, customers of a financial services company are asked to evaluate the company's financial consultants and services. Higher ratings on the client satisfaction survey indicate better service, with 7 the maximum service rating. Independent samples of service ratings for two financial consultants are summarized here. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. Use  ? = 0.05  and test to see whether the consultant with more experience has the higher population mean service rating. Assume the population variances are unequal. Consultant A Consultant B n1 = 16 n2 = 10 x1 = 6.85 x2 = 6.25 s1 = 0.69 s2 = 0.75 (a) State the null and alternative hypotheses. -H0:?1 − ?2 = 0 Ha:?1 − ?2 = 0 -H0:?1 − ?2 > 0 Ha:?1 − ?2 = 0  -H0:?1 − ?2 ≠ 0 Ha:?1 − ?2 = 0 -H0:?1 − ?2 = 0 Ha:?1 − ?2 > 0 -H0:?1 − ?2 = 0 Ha:?1 − ?2 ≠ 0 (b) Compute the value of the test statistic. (Round your answer to three decimal places.)…

You may need to use the appropriate technology to answer this question. The better-selling candies are often high in calories. Assume that the following data show the calorie content from samples of M&M's, Kit Kat, and Milky Way II. M&M's Kit Kat Milky Way II 250 245 200 210 205 208 230 215 202 220 225 190 250 240 180 Test for significant differences among the calorie content of these three candies. State the null and alternative hypotheses. O H,: Median MM * Mediank * Median ww KK H: Median MM = Mediangk = MedianMw "KK O Ho: Median MM = MedianKK H: Median MM * Median KK * MedianyW Median Mw O Ho: All populations of calories are identical. H: Not all populations of calories are identical. O Ho: Not all populations of calories are identical. H: All populations of calories are identical. O Ho: Median MM = Mediank = MedianMw H: Median MM > Mediankk > Median Mw Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three…

The sample mean and sample variance of Fire Jata valves are X = 104 and 5² = 16. If three of the data values are 102, 100, and 105, What are the other two Jaté Values?

Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of cars each of the cars types. The data below displays the frontal crash test performance percentages. Test whether there are statistical differences in the frontal crash test performance for each type of car.   Car Sizes Compact Cars Midsize Cars Full-Size Cars 95 95 93 98 98 97 87 98 92 99 89 92 99 94 84 94 88 87 99 93 88 98 99 89 How many pairs must be compared for follow-up t-tests?