(Answered) 1 if there are 150 values in a data set how many classes

Statistics

1) If there are 150 values in a data set, how many classes should be created for a frequency histogram?

A. 5

B. 6

C. 7

D. 8

E. 9

2) . If x is a binomial random variable where n = 100 and p = 0.2, find the probability that x is less than or equal to 15 using the normal approximation t o the binomial.

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