# A hotel chain wants to estimate the mean number of

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Question 81.A hotel chain wants to estimate the mean number of rooms rented daily in a givenmonth. The population of rooms rented daily is assumed to be normally distributed for each month. During February, a sample of 25 days has a sample mean of 37 rooms with a standard deviation of 24 rooms. The parameter of interest is the proportion of the rooms rented daily in a given month.TrueFalse
1 points Question 91.A hotel chain wants to estimate the mean number of rooms rented daily in a givenmonth. The population of rooms rented daily is assumed to be normally distributed for each month. During February, a sample of 25 days has a sample mean of 37 rooms with a standard deviation of 24 rooms. The marginal error of a 99% confidence interval for themean number of rooms rented daily in a given month is ________.
1 points Question 101.Given the statistics below for two random samples from independent populations: Construct a 50% confidence interval for the difference between the population means.The critical value for a 50% confidence interval for this sample is ________.
1 points Question 111.The mean mass of 50 male students who showed above average participation in athletics was 68.2 kg with a standard deviation of 3 kg, while 50 male students who showed no interest in such participation had mean mass of 67.5 with a standard deviation of 2.8 kg. The sampling error of a 99% confidence interval is ________.
1 points