Suppose X is a normal random variable with u = 400 and σ = 69. Find the values of the following probabilities. (Round your answers to four decimal places.)(a) P(X < 600)(b)P(X > 250)(c) P(200 < X < 500)You may need to use the appropriate table in the Appendix of Tables to answer this question.

Let X be the random variable from normal distribution with mean (μ) = 400 and standard deviation (σ)…

Answered: Suppose X is a normal random variable…

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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Use the following probabilities to answer the question. Round to 4 decimal places.P(A)=0.54P(A)=0.54 , P(B)=0.41P(B)=0.41 , P(AandB)=0.05P(AandB)=0.05 .P(B∣A)=
A news company reported that 6% of adult Americans have a food allergy. Consider selecting 15 adult Americans at random. Define the random variable x as x = number of people in the sample of 15 that have a food allergy. Find the following probabilities. (Round your answers to three decimal places.) (a) P(x < 2) (b) P(x ≤ 2) (c) P(x ≥ 3) (d) P(1 ≤ x ≤ 2) You may need to use the appropriate table in the appendix to answer this question.
What is the probability you will roll a double (two 1 ’s, two 2 ’s, two 3 ’s, and so on)? Your answer may be short but you must show what numbers you multiplied/divided/added/subtracted by to get your final answer. It would be written in ” P(E) = ” form.
Assume that a researcher randomly selects 14 newborn babies and counts the number of girls selected, x. The probabilities corresponding to the 14 possible values of x are summarized in the given table. Answer the question using the table. Probabilities of Girls x(girls) P(x) x(girls)| P(x) |x(girls)| P(x) 0.000 0.122 10 0.061 1 0.001 0.183 11 0.022 2 0.006 7 0.210 12 0.006 3 0.022 8 0.183 13 0.001 4 0.061 9 0.122 14 0.000 Find the probability of selecting 12 or more girls. 0.001 O 0.022 0.006 O 0.007
The route used by a certain motorist in commuting to work contains two intersections with traffic signals. The probability that he must stop at the first signal is 0.45, the analogous probability for the second signal is 0.5, and the probability that he must stop at at least one of the two signals is 0.9. (a) What is the probability that he must stop at both signals? X (b) What is the probability that he must stop at the first signal but not at the second one? X (c) What is the probability that he must stop at exactly one signal?
A news company reported that 7% of adult Americans have a food allergy. Consider selecting 15 adult Americans at random. Define the random variable x as x = number of people in the sample of 15 that have a food allergy. Find the following probabilities. (Round your answers to three decimal places.) (a) P(x < 2) (b) P(x ≤ 2) (c) P(x ≥ 3)
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Suppose X is a normal random variable with = 400 and = 69. Find the values of the following probabilities. (Round your answers to four decimal places.) (a) P(X < 600) (b) P(X> 250) (c) P(200 < X < 500) You may need to use the appropriate table in the Appendix Tables to answer this question.