Suppose that we have an approximately normal population of test scores with mean

Question

Suppose that we have an approximately normal population of test scores with mean 70 and standard deviation 5. A sample of 49 scores are taken from this population. Match each of the following with the appropriate TI-84 PLUS calculator command. The first quartile the sample mean The 25th percentile for ail test scores Probability that the sample mean score is between 60 and 80 Probability that a randomly selected individual test score from the population is between 60 and 80 normalcdf(60, 80, 70, 5/7) normalcdf(60, 80, 70, 5) invNorm(0.25, 70, 5)

Explanation / Answer

a) option 3

b) option 4

c) option 2

d) option 1

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