Mathematics, 21.11.2019 03:31, Anshuman2002

Aresearcher collects a simple random sample of grade-point averages of statistics students, and she calculates the mean of this sample. under what conditions can that sample mean be treated as a value from a population having a normal distribution? select all that apply.

a. the sample has more than 30 grade-point averages.

b. if the population of grade-point averages has a normal distribution

c. the researcher collects more than 30 samples.

d. if the population of statistics students has a normal distribution.

Answers: 1

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Aresearcher collects a simple random sample of grade-point averages of statistics students, and she...