42. Let X have a Standard Normal Distribution. Find P(X > - 0.25).В. 0.59871A. 0.49871С. 0.69871D. 0.79871

Answered: 42. Let X have a Standard Normal…

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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31. Let X have a Standard Normal Distribution. Find a such that P(X < a) = 0.88877 А. 0.92 В. 1.02 С. 1.12 D. 1.22
Suppose X is a non-standard normal variable, with a mean of 118, and std deviation of 15 (i.e. X~N(118,15)). You have an observation (z) on a standard normal scale (i.e. Z~N(0,1)). If z = -0.03, what is it on an X scale?
46. Let X have a Standard Normal Distribution. Find a such that P(X > a) = 0.80511 %3| A. – 0.66 В. — 0.76 С. — 0.86 D. – 0.96
45. Let X have a Standard Normal Distribution. Find a such that P(X < a) = 0.88877 А. 0.92 В. 1.02 С. 1.12 D. 1.22
Suppose a normal distribution has a mean of 79 and a standard deviation of 7. What is P(x < 65)? A. 0.975 В. 0.84 С. 0.025 D. 0.16
(a) The graph shows a Standard Normal Distribution. You are given 1 or 2 z-score(s) and need to shade the area (=probability) corresponding to: Р(г < 1.6). Click on the "Shade" menu to select the shading option corresponding to the question [to the left, to the right, or between 2 values]. Then slide the arrow to the appropriate z-score. Shade: Left of a value v. Click and drag the arrows to adjust the values. -3 -2 -1 2 4 -1.5 (b) Part 2: you are given an area (=probability), and you need to compute c, which is the z-score that corresponds to the statement: P(z < c) = 0.4 (This is an inverse standard normal distribution problem. Use technology to compute c) The arrow can only be dragged to tick marks that are multiples of 0.1 So, round c to 1 decimal place, and then move the arrow to that rounded value. Click on the "Shade" menu to select the shading option corresponding to the question [to the left, to the right, or between 2 values]. (If the question is less c, choose Left of a…
3. If Z is a random variable having the standard normal distribution, find i. P(Z - 1.08) iii. P(-1.90
Consider a normal distribution curve where 55-th percentile is at 11 and the 20-th percentile is at 8. Use this information to find the mean, u , and the standard deviation, o , of the distribution. a ) μ - b) σ-
33. Let X have a Nonstandard Normal Distribution with u = 55 and o = 8. Find P(X < 59). C. 0.70146 A. 0.68146 B. 0.69146 D. 0.71146
Assume two normal distributions where μ1 = 0.0001, σ1 = 0.01, μ2 = -.0002, σ2 = 0.015, and ρ = .45. Using zs = { .814, .259 }, generate z1 and z2.
47. Let X have a Nonstandard Normal Distribution with µ = 55 and o = 8. Find P(X < 59). A. 0.68146 В. 0.69146 С. 0.70146 D. 0.71146
Suppose we have the short hand info on a Normal Distribution as N(10,25). What is the population mean of the distribution and what is the population standard deviation? μ = σ =

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42. Let X have a Standard Normal Distribution. Find P(X > - 0.25). В. 0.59871 A. 0.49871 С. 0.69871 D. 0.79871