Which of the following is a theoretical distribution? Data Set 6-3: A population
ID: 3330158 • Letter: W
Question
Which of the following is a theoretical distribution?
Data Set 6-3: A population of scores was normally distributed with a mean of 32 and a standard deviation of 3.
Look at Data Set 6-3. The proportion of the distribution with scores of 30 or more is
A z score of 2.5 indicates a raw score
Suppose a student has a z score of -1. This means she
Four brothers took an anthropology course from the same instructor during four different years. The total points of each, along with the class parameters, are given below. Use z scores to determine who did the best.
a) a count of the number of cups of coffee consumed during each hour of the day;Explanation / Answer
(According to Chegg policy, only four subquestions will be answered. Please post the remaining in another question)
Which of the following is a theoretical distribution?
As every option (among the first three) counts the number of an occurence, the correct answer is:
d. None of the answers are correct
= 32 = 3
X = 30
Z = (X - ) /
= (30 - 32) / 3
= - 0.6667
From the table, probability P(Z > -0.67) = 0.7486
This is given in option a)
A z score of 2.5 indicates a raw score
c. That is much larger than the mean
Suppose a student has a z score of -1. This means she
c. scored 1 standard deviation below the mean.
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