fast please Questions 1,2 3 refer to the following The statistics exam score has an average of 70 with a standard deviation of 8 points. We draw a random sample of 16 exams. Let the random variable representing the mean (average) score of the 16 exams. 1. What is the distribution of the meanX-bar? Group of answer choices N(70, 8) N(70, 2) U(1, 16) Not enough information 2. Find the probability that the mean score is between 68 and 79. Group of answer choices 0.4684 0.5316 0.1587 0.8413 Find the 80th percentile for the mean score Xbar Group of answer choices 76.73 71.68 68.32 63.27
fast please Questions 1,2 3 refer to the following The statistics exam score has an average of 70 with a standard deviation of 8 points. We draw a random sample of 16 exams. Let the random variable representing the mean (average) score of the 16 exams. 1. What is the distribution of the meanX-bar? Group of answer choices N(70, 8) N(70, 2) U(1, 16) Not enough information 2. Find the probability that the mean score is between 68 and 79. Group of answer choices 0.4684 0.5316 0.1587 0.8413 Find the 80th percentile for the mean score Xbar Group of answer choices 76.73 71.68 68.32 63.27
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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fast please
Questions 1,2 3 refer to the following
The statistics exam score has an average of 70 with a standard deviation of 8 points. We draw a random sample of 16 exams. Let the random variable representing the mean (average) score of the 16 exams.
1. What is the distribution of the meanX-bar?
Group of answer choices
N(70, 8)
N(70, 2)
U(1, 16)
Not enough information
2. Find the probability that the mean score is between 68 and 79.
Group of answer choices
0.4684
0.5316
0.1587
0.8413
Find the 80th percentile for the mean score Xbar
Group of answer choices
76.73
71.68
68.32
63.27
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