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In: Statistics and Probability

It is known that 80% of all college professors have doctoral degrees. If 10 professors are...

It is known that 80% of all college professors have doctoral degrees. If 10 professors are randomly selected, find the probability that

a. fewer than 4 have doctoral degrees.

b. At least 6 have doctoral degrees.

c. Between 5 and 7 (inclusive) have doctoral degrees.

d. Calculate the mean or expected number. e. Calculate the variance and standard deviation.

Solutions

Expert Solution

a)

b)

c)

d)

orchestra answered 2 years ago
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