Chapter 6: Q. 49 (page 387)
If the area to the right of in a normal distribution is , what is the area to the left of?
Short Answer
The area to the left ofis
Chapter 6: Q. 49 (page 387)
If the area to the right of in a normal distribution is , what is the area to the left of?
The area to the left ofis
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Find the probability that
Height and weight are two measurements used to track a child’s development. The World Health Organization measures child development by comparing the weights of children who are the same height and the same gender. In 2009, weights for all cm girls in the reference population had a mean kg and standard deviation . Weights are normally distributed. . Calculate the z-scores that correspond to the following weights and interpret them.
a. 11 kg
b. 7.9 kg
c. 12.2 kg
Suppose X ~ N(–1, 2). What is the z-score of x = 2.
In a normal distribution, x = 6 and z = –1.7. This tells you that x = 6 is ____ standard deviations to the ____ (right or left) of the mean.
Is X~N() a standardized normal distribution? Why or why not?
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