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

question 4

Short Answer

TABLE 7-7
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 7-7,90% 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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