Mathematics, 12.03.2021 15:30 daosau377
A large school district is considering implementing a program that, if successful, would improve the reading scores of its students by 10 points. The current reading scores for the district are normally distributed with a mean of 25 and a standard deviation of 8. The administrators decide to test the new program in one school of 200 students. What is the standard deviation of the comparison distribution
Answers: 1
and standard deviation 
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean 
.
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