TABLE 7-1 Times Spent Studying by Students in the Week Before Final

question 147

Short Answer

TABLE 7-1
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students. Use the finite population correction.
-Referring to Table 7-1, 90% of all the samples of 4 will have a sample mean of no more than how many hours from the population mean?

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