Chapter 6: Q. 10 (page 286)
Identify the distribution of the standardized version of a normally distributed variable.
Short Answer
The standard normal distribution is called score or standard score.
Chapter 6: Q. 10 (page 286)
Identify the distribution of the standardized version of a normally distributed variable.
The standard normal distribution is called score or standard score.
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Get started for freeA variable is normally distributed with mean and standard deviation .
Part (a): Determine and interpret the quartiles of the variable.
Part (b) Obtain and interpret the percentile.
Part (c) Find the value that of all possible values of the variable exceed.
Part (d) Find the two values that divide the area under the corresponding normal curve into a middle area of and two outside areas of . Interpret your answer.
State the empirical rule as specialized to variables.
A variable is normally distributed with a mean of and standard deviation Find the percentage of all possible values of the variable.
a. lie between and .
b. exceed ,
c. are less than
14. Explain how to use Table II to determine the area under the standard normal curve that lies
a. to the left of a specified z-score.
b. to the right of a specified z-score.
c. between two specified z-scores.
Verbal GRE Scores. Refer to Problem 28, and fill in the following blanks.
a. Approximately of students who took the verbal portion of the GRE scored between_______and________
b. Approximately of students who took the verbal portion of the GRE scored between_______and________
c. Approximately of students who took the verbal portion of the GRE scored
between_______and________
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