Chapter 6: The Normal Distribution
Q 19
Suppose X ~ N(4, 2). What value of x is 1.5 standard deviations to the left of the mean?
Q. 2
A normal distribution has a mean of 61 and a standard deviation of 15. What is the median?
Q. 20
Suppose . What value of is two standard deviations to the right of the mean?
Q. 21
Suppose . What value of is standard deviations to the left of the mean?
Q.22
Suppose X ~ N(–1, 2). What is the z-score of x = 2.
Q. 23
Suppose X ~ N(12, 6). What is the z-score of x = 2?
Q. 24
Suppose X ~ N(9, 3). What is the z-score of x = 9?
Q. 25
Suppose a normal distribution has a mean of six and a standard deviation of 1.5. What is the z-score of x = 5.5?
Q.26
In a normal distribution, x = 5 and z = –1.25. This tells you that x = 5 is ____ standard deviations to the ____ (right or left) of the mean.
Q. 27
In a normal distribution, x = 3 and z = 0.67. This tells you that x = 3 is ____ standard deviations to the ____ (right or left) of the mean.