Find the z-score for the value 52, when the mean is 58 and the standard deviation is 9.
A) z = -0.74 B) z = -0.78 C) z = 0.74 D) z = -0.67
Question 2
A recent study suggested that 70 of all eligible voters will vote in the next presidential election. Suppose 20 eligible voters were randomly selected from the population of all eligible voters. Use a binomial probability table to find the probability that more than 12 of the eligible voters sampled will vote in the next presidential election.
A) 0.887 B) 0.772 C) 0.392 D) 0.608 E) 0.228
Cumulative Standard Normal Distribution
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