. The scores of individual students on a mathematics test have a normal distribution with mean 18.6 and standard deviation 5.9. There are 100 students in all took the test. What is the mean, variance, and standard deviation of the sample mean for 100 students? SOLUTION

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1. The scores of individual students on a mathematics test have a normal distribution with mean 18.6 and
standard deviation 5,9. There are 100 students in all took the test. What is the mean, variance, and
standard deviation of the sample mean for 100 students?
STEPS
SOLUTION
1. Identify the given information.
2. Identify what is asked for.
3. Identify the formula to be used.
4. Solve the problem.
5. State the final answer.
Transcribed Image Text:1. The scores of individual students on a mathematics test have a normal distribution with mean 18.6 and standard deviation 5,9. There are 100 students in all took the test. What is the mean, variance, and standard deviation of the sample mean for 100 students? STEPS SOLUTION 1. Identify the given information. 2. Identify what is asked for. 3. Identify the formula to be used. 4. Solve the problem. 5. State the final answer.
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