the scores on a certain test are normally distributed with a mean score of 65 and...
the scores on a certain test are normally distributed with a mean score of 65 and a standard deviation of 2. what is the probability that a sample of 90 students will have a mean score of at least 65.2108.
Homework Answers
From the given information,
Mean= 65
Sd= 2
n= 90
Hence,
By using normal probability calculator,
P(Sample mean≥65.2108)= 0.1587
Thank you.
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the scores on a certain test are normally distributed
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