One hundred subjects in a psychological study had a mean score of 36 on a test...
One hundred subjects in a psychological study had a mean score of 36 on a test instrument designed to measure anger. The standard deviation of the 150 scores was 12. Find a 95% confidence interval for the mean anger score of the populations from which the sample was selected.
Select one:
a. (32.7, 39.3)
b. (33.2, 38.8)
c. (32.1, 39.9)
d. None of other answer is necessary true.
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One hundred subjects in a psychological study had a mean score
of 36 on a test...
(4)Five hundred students from a local high school took a college entrance examination. Historical data from the school record show that the standard deviation of test scores is 40. A random sampl...
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