Question
A online video store in the United Kingdom estimates that annual expenditures of members on rentals follow a normal distribution with a mean of
A online video store in the United Kingdom estimates that annual expenditures of members on rentals follow a normal distribution with a mean of 140. It was also found that 21% of all members spend more than 190 in a year. What percentage of members spend more than 200? Click the icon to view the standard normal table of the cumulative distribution function. The percentage of members who spend more than 200 is %. (Simplify your answer. Type an integer or decimal rounded to two decimal places as needed.) 6 10 points The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the soles representatives make an average of 44 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 35 sales representatives reveals that the mean number of calls made last week was 45 The standard deviation of the sample is 4.5 calls Using the 0.050 significance level, can we conclude that the mean number of calls per salesperson per week is more than 44? He US 44 H44 eBook a. Compute the value of the test statistic (Round your answer to 3 decimal places.) P Defences Value of the test statistic b. What is your decision regarding H HO. The mean number of cats in than 44 per wo
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