The number of pizzas consumed per month by universitystudents is normally distributed with a mean of 14 and astandard deviation of 5.A. What proportion of students consume more than 16pizzas per month?Probability=B. What is the probability that in a random sample of size10, a total of more than 160 pizzas are consumed?Probability =

Let X be the random variable from normal distribution with mean (μ) = 14, standard deviation (σ) = 5…

Answered: The number of pizzas consumed per month…

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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afactory manufactures car tyres that have an average lifetime of 45261 kilometers with a standard deviation of 2761 kilometers and the distribution of lifetime of the tyres is normal. A. find the probability that tyre's lifetime is between 42061 km and 48561 km? B. what is the lifetime in km, that 61%of tyres exceed?
The rate of return for firms on the stock market is normally distributed with a 7.5% average rate of return (the mean) with a standard deviation of 2.5%. A What proportion of firms will earn a return between 4% and 8%? B To the nearest percent find the probability of a firm earning 3% or less per year. If there are 1000 firms listed on the stock market, then how many firms earn a return of less than 3% a year? C To the nearest percent, find the probability of a firm earning 8% return in a year. if there are still 1000 firms listed on the stock markeet then how many firms will earn a return of 8% or higher? D What rate of return would put a firm in the top 20%?
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The number of pizzas consumed per month by university students is normally distributed with a mean of 11 and a standard deviation of 4. A. What proportion of students consume more than 13 pizzas per month? Probability = B. What is the probability that in a random sample of size 10, a total of more than 130 pizzas are consumed? Probability=
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