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Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.DIST(x,mean,standard_dev,cumulative) to calculate the proportion of observations that will be less than 600 minutes: 1 AA (round to 4 decimal places), and the proportion of observations that will be greater than 200 minutes: 0.0034 A (round to 4 decimal places) Question 6 Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of A (round to a whole number), and the observations to the left: 155 values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and AA (round to a whole number)

Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.DIST(x,mean,standard_dev,cumulative) to calculate the proportion of observations that will be less than 600 minutes: 1 AA (round to 4 decimal places), and the proportion of observations that will be greater than 200 minutes: 0.0034 A (round to 4 decimal places) Question 6 Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of A (round to a whole number), and the observations to the left: 155 values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and AA (round to a whole number)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question 5. Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.DIST(x,mean,standard_dev,cumulative) to calculate the proportion of observations that will be less than 600 minutes: 1 A (round to 4 decimal places), and the proportion of observations that will be greater than 200 minutes: 0.0034 AA (round to 4 decimal places) Question 6 Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of observations to the left: 155 (round to a whole number), and the values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and A (round to a whole number)
Transcribed Image Text:Question 5. Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.DIST(x,mean,standard_dev,cumulative) to calculate the proportion of observations that will be less than 600 minutes: 1 A (round to 4 decimal places), and the proportion of observations that will be greater than 200 minutes: 0.0034 AA (round to 4 decimal places) Question 6 Saved Suppose that nightly study time T in minutes is normally distributed with N(130,65). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of observations to the left: 155 (round to a whole number), and the values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and A (round to a whole number)
Suppose that nightly study time T in minutes at a different institution is normally distributed with N(130,50). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of observations to the left: A (round to a whole number), and the values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and (round to a whole number) Question 8 How did cnanging the standard deviation from 65 to 50 affect the answers in the previous problem?
Transcribed Image Text:Suppose that nightly study time T in minutes at a different institution is normally distributed with N(130,50). Use =NORM.INV(probability,mean,standard_dev) to find the value of T with 65% of observations to the left: A (round to a whole number), and the values of T which separate the middle 80% of the observations from the rest: A (round to a whole number) and (round to a whole number) Question 8 How did cnanging the standard deviation from 65 to 50 affect the answers in the previous problem?
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