At the local liquour store, a single purchase approximatelyfollows a normal distribution with a mean of $88 and a standarddeviation of $18.73. Using the Empirical Rule, what valuesrepresent the range of the middle 68% of the distribution?(Round your answer to 2 decimal places if necessary)Check

The single purchase in the liquor store is approximately normally distributed.Mean, Standard…

Answered: At the local liquour store, a single…

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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Let X1, X2, ..., Xn be a random sample from a population r.v. X N(0, 02), with ơ to be known. n Show that T = X; is a sufficient statistic. Find the distribution of T and an MLE for 0. i=1
Jse the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 64 miles per hour, with a standard deviation of 4 miles per hour. Estimate the percent of vehicles whose speeds are between miles per hour and 72 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 56 miles per hour and 72 miles per hour.
It is often quoted that in a normal distribution, 95% of the data lies 1.96 deviations either side of the mean. How many deviations from the mean would 88 percent lie?
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Please answer the following: You can Thank you. Adult IQ scores can be modeled using a normal model with mean 100 and a standadrd deviation of 15. a. Find the prportion of IQ scores that are less than 115. b. Find the proportion of IQ scores that are greater than 131.5. c. Find the proportion of IQ scores between 90 and 110. d. Find the proportion of IQ scores that are betewwn 110 and 120. e. Find the IQ score above which there are 10% of the scores. f. Find the IQ score below which there are 20% of the scores.
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At the local liquour store, a single purchase approximately follows a normal distribution with a mean of $88 and a standard deviation of $18.73. Using the Empirical Rule, what values represent the range of the middle 68% of the distribution? (Round your answer to 2 decimal places if necessary)