Answered: Suppose x has a distribution with u =…

Suppose x has a distribution with u = 18 and o = 14. (a) If a random sample of size n = 46 is drawn, find Hy, oy and P(18

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

Suppose x has a distribution with u = 18 and o = 14.
(a) If a random sample of size n = 46 is drawn, find ux, ox and P(18 <x< 20). (Round ox to two decimal places and the probability to four decimal places.)
Hx =
ox =
P(18 < x < 20) =
(b) If a random sample of size n = 59 is drawn, find ux, o x and P(18 < x < 20). (Round ox to two decimal places and the probability to four decimal places.)
Hx =
Ox =
P(18 < x < 20) =
(c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).)
---Select--- 9 sample size. Therefore, the distribution about uz is ---Select---
The standard deviation of part (b) is ---Select--- 0 part (a) because of the

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