The number 5

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 35 hours and the median is 31.2 hours. Twenty-four of the families in the sample turned on the television for 20 hours or less for the week. The 6th percentile of the data is 20 hours.

Question: Approximately how many families are in the sample? Round your answer to the nearest integer.

Correct answer:

n =  333

Step-by-step explanation:

μ=35 m=31.2  p6=20 q=6%=1006=0.06  n q=20 n 0.06=20  0.06n=20  n=31000333.333333=333

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