Title: Understanding the Distribution of Christmas Cards ReceivedDescription: Americans receive an average of 17 Christmas cards each year, with the number of cards being normally distributed and a standard deviation of 5. Let $X$ represent the number of Christmas cards received by a randomly selected American. For accurate calculations, answers are rounded to four decimal places.Questions:a. Distribution of $X$: - What is the distribution of $X$? - $X \sim N(17, 5)$b. Probability of Receiving No More Than 21 Cards: - If an American is randomly chosen, find the probability that this individual will receive no more than 21 Christmas cards this year. - [To be calculated]c. Probability of Receiving Between 19 and 23 Cards: - If an American is randomly chosen, find the probability that this individual will receive between 19 and 23 Christmas cards this year. - [To be calculated]d. Maximum Number of Cards Received by 90% of Americans: - 90% of all Americans receive at most how many Christmas cards? (Please enter a whole number) - [To be calculated]

given datanormal distribution μ = 17σ = 5

Answered: Americans receive an average of 17…

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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Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a standard deviation o=20. Find the probability that a randomly selected adult has an IQ between 88 and 122. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 88 and 122 is (Type an integer or decimal rounded to four decimal places as needed.) C
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