Author Question: The probability of correctly predicting the outcome of a coin toss is p = 1/2. What is the standard ... (Read 72 times)

j.rubin · **on:** Jun 20, 2018

The probability of correctly predicting the outcome of a coin toss is p = 1/2. What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?

A) 50
B) 25
C) 10
D) 5

Question 2

For the repeated-measures t statistic, where n1 and n2 are the number of scores before and after treatment, and n = n1= n2, df = ____.

A) n1 + n2 - 2
B) n - 2
C) n - 1
D) n1 + n2 - 1