According to the market research firm NPD Group, Americans ate an average of 211 meals in...

According to the market research firm NPD Group, Americans ate an average of 211 meals in 2001. The following data show the number of meals eaten in restaurants as determined from a random sample of Americans in 2014. 212 128 197 344 143 79 180 313 57 200 161 320 90 224 266 284 231 322 200 173 a. Using a = 0.05, test the hypothesis that the number of meals eaten at restaurants by Americans has not changed since 2001 Estimate the p-value for this test using Table 5 in Appendix A. c. Determine the precise p-value for this test using Excel. d. Use PHSat to validate these results. d. What assumption need to be made to perform this analysis?.

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orchestra answered 1 year ago

7. According to the market research firm NPD Group, Americans ate an average of 211 meals...

7. According to the market research firm NPD Group, Americans ate an average of 211 meals in restaurants in 2001. The following data show the number of meals eaten in restaurants as determined from a random sample of Americans in 2014: 212, 128, 197, 344, 143, 79, 180, 313, 57, 200, 161, 320, 90, 224, 266, 284, 231, 322, 200, 173. Using ? = .05, test the hypothesis that the number of meals eaten at restaurants by Americans has not...

According to a survey, people in a certain country ate an average of 211 meals in...

According to a survey, people in a certain country ate an average of 211 meals in restaurants in 2001. The data in the accompanying table show the number of meals eaten in restaurants as determined from a random sample of people in this country in 2009. Complete parts (a) through (d) below. Table: 214 128 200 356 145 81 176 323 59 205 159 332 88 218 257 298 235 318 210 168 Determine test statistic, p value, conclusion etc.

According to a survey, people in a certain country ate an average of 212 meals in...

According to a survey, people in a certain country ate an average of 212 meals in restaurants in 2001. The data in the accompanying table show the number of meals eaten in restaurants as determined from a random sample of people in this country in 2009. Using alpha equals =0.02. Test the hypothesis that the number of meals eaten at restaurants by people in this country has not changed since 2001. Determine the test statistic....??? Data Table: 202 134 199...

According to the Pew Research Center, 20% of Americans have not read a book in the...

According to the Pew Research Center, 20% of Americans have not read a book in the past year. Let ˆp be the proportion of people that have not read a book in the past year in a random sample of 662 Americans. Determine the following probabilities. Round probability solutions to four decimal places and ˆp values to two decimal places, if necessary. Find the probability that in a random sample of 662 Americans, at most 113 people have not read...

A firm has done extensive market research, and has found that on average when they lower...

A firm has done extensive market research, and has found that on average when they lower their price by $6.75, demand for the product increases by 120 units. If sales are 1000 units and the price is $145, what is the price elasticity? What would it be if sales were 3500 units and the price $200? What does the difference in the two elasticities mean?

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According to a recent Pew Research Center survey, 231 out of 371 Americans surveyed with just...

According to a recent Pew Research Center survey, 231 out of 371 Americans surveyed with just a high school diploma and 543 out of 634 Americans surveyed with a college degree have read at least one book in the last 12 months. Based on these sample results and a 0.01 level of significance, can one infer that the proportion of Americans who have read at least one book in the last 12 months is higher for those with a college...

According to a study done by Pew Research Center, 210 out of 500 adult Americans believe...

According to a study done by Pew Research Center, 210 out of 500 adult Americans believe that marriage is now obsolete. a. Find the mean and standard deviation of the sampling distribution of ?̂; the sample proportion of adult Americans who believe marriage is obsolete. b. In a random sample of 500 adult Americans, what is the probability that less than 35% believe marriage is obsolete? c. What is the probability that in a random sample of 500 adult Americans...

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