Question 3A psychological test has scores that range from 0 to 10 (whole numbers only). The stable rangeis given by scores ranging from 3-8 (inclusive); the group scoring less than 3 are labeled as LowRisk, while those with a score greater than 8 are labeled as High Risk. In a certain populationof interest the probabilty that a person is pschologically stable is 86 % , and the probability thata person is from the High Risk group is 4%. A random sample of 10 people is taken from thispopulationWhat is the probability that at least 2 people are NOT from the High Risk group?a)b)What is the probability that fewer than 3 people are from the Low Risk group?

Introduction:If X ~ Bin (n, p), then the probability mass function of X is:p (x) = (nCx) px (1 – p)n…

Answered: Question 3 A psychological test has…

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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Teenagers who do not sleep well or long enough may have a higher risk of raised blood pressure, which could lead to cardiovascular disease later in life. The odds of raised blood pressure increase 3.5 times for those who have trouble falling asleep at night or who wake up too early and 2.5 times for those with sleeping periods of fewer than 6.5 hours. A health psychologist is interested in studying teenagers who have diastolic blood pressure scores in the top 20%. Diastolic blood pressure scores for teenagers follow a normal distribution with μ = 72 and σ = 10. Use the Distributions tool to help answer the questions that follow. The minimum z-score necessary to be in the top 20% of the diastolic blood pressure distribution is z =0.842 . Use this z-score to determine X, the corresponding diastolic blood pressure score. X = 80.42 This score, X, is the 80th percentile of diastolic blood pressure scores among teenagers. The percentile rank of this score is 80%…
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