Assume X is normally distributed with amean 120 and standard deviation of 15.Determine the following probabilities.(a) P( X > 120)(b) P( 90< X < 140 )(Write the answers up to 4 decimal places.Example: 0.1234)Click this link for Normal table:https://drive.google.com/drive/folders/10Vh9susp=sharing(a) P(X >120)=(b) P( 90 < X < 140)=

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Answered: Assume X is normally distributed with a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Suppose that time required to compete a 1040R tax form is normally distributed with a mean of 110 minutes and a standard deviation of 15 minutes. What proportion of the 1040R tax form will be completed in less than 121 minutes. Round your answer to at least 4 decimal places.
Please answer ASAP
Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of 0.22 inches and a standard deviation of 0.05 inches. What proportion of woodlice have antenna lengths that are more than 0.18 inches? Round your answer to at least four decimal places.
The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX, 107, 100, 126, 120, 100 What is the standard deviation?
suppose that a category of world-class runners are known to run a marathon (26 miles) in an average of 143 minutes with a standard deviation of 14 minutes. consider 49 of the races. Let x̅ = the average of the 49 races. I need help finding the median of the average running times. if someone could explain how to solve this problem that would be great
Suppose that the heights of adult men in the United States are normally distributed with a mean of 69 inches and a standard deviation of 3 inches. What proportion of adult men in the United States is at least 6 feet tall? (Hint 6 feet=72 inches.) Round answer to at least 4 decimal places.
Q6/ Calculate mean, variance and standard deviation of following table: classes frequency 1-10 11 10-20 29 20-30 18 30-40 4 40-50 50-60 3
If a distribution has a mean of 46 and a standard deviation of 1, what value would be -2 standard deviations from the mean?
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Round each z-score to the nearest hundredth. A data set has a mean of x = 214 and a standard deviation of 44. Find the z-score for each of the following. (a) x = 200 (b) x = 224 (c) x = 300 (d) x = 100
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. The middle 30% fall between what two values? (round to 2 decimal places)

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