Discuss the below:
Q1: Given that z is a standard normal random variable and that the area to the right of z is 0.1949, then the value of z must be
A) 0.51
B) -0.51
C) 0.86
D) -0.86
Q2: Your high school graduating class had 564 members. Thirty-three percent of these are expected to attend college. The probability that less than 160 will attend college is
A) 0.1580
B) 0.4900
C) 0.0090
D) 0.0832
Q3: The sampling distribution of the mean will have the same standard deviation as the original population from which the samples were drawn.
True
False
Q4: In a given year, the average annual salary of a NFL football player was $189,000 with a standard deviation of $20,500. If a sample of 50 players was taken, then probability that the sample mean will be $192,000 or more is
A) 0.6970
B) 0.3485
C) 0.1515
D) 0.0398