find the area of the indicated region under the standard normal curve. a) .0968
ID: 3158783 • Letter: F
Question
find the area of the indicated region under the standard normal curve.
a) .0968
b).9032
c).9177
d).0823
Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $28,000 and a standard deviation of $3000. What is the cutoff salary for teachers in the bottom 10%?
a)$23,065
b)$32,935
c)$31,840
d)$24,160
Scores on a test have a mean of 72 and a standard deviation of 12. Random samples of size 64 are drawn from this population and the mean of each sample is determined. Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution.
a)72, 1.5
b)9, 1.5
c)712 9
d)72, 12
Explanation / Answer
THREE DIFFERENT QUESTION ARE GIVEN, GIVING U THE SOLUTION OF 1ST
1) AS PER THE GRAPH THE Z VALUE = -1.30
AND THE SHADED REGION IS BEYOND THE Z VALUE
THEREFORE THE ARE = 1 - P(Z = 1.30)
= 1 - 0.0968 = 0.9032
HENCE OPTION B IS CORRECT
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