Asked by Precious
what is the proportion of students with a raw score less than 10? if information was collected from fellow students the rating on a 5 point scale on 5 different questions. given a normally distributed population with a mean of 13, a standard deviation of 3, and 50 as the number of cases. what is the percentage of students with a raw score less than 20?
what is the number of students with raw scores between 10 and 20?
what is the number of students with raw scores between 10 and 20?
Answers
Answered by
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores. For percentage, multiply by 100. For n, multiply by 50.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores. For percentage, multiply by 100. For n, multiply by 50.
Answered by
Cathy
Given a normally distributed population with a mean (μ) of 7, a standard deviation (σ) of 3, and 50 as the
number of cases (N), answer the following questions:
4.1 What is the proportion of cases with a raw score greater than 5?
4.2 What is the percentage of cases with a raw score greater than 15?
4.3 What is the number of cases with raw scores between 5 and 15?
number of cases (N), answer the following questions:
4.1 What is the proportion of cases with a raw score greater than 5?
4.2 What is the percentage of cases with a raw score greater than 15?
4.3 What is the number of cases with raw scores between 5 and 15?
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