### Problem StatementThe owner of a convenience store has determined that their daily revenue has a mean of $7,200 and a standard deviation of $1,200. A simple random sample of the next 30 days is taken and daily revenue is recorded. What is the probability that the mean daily revenue for the next 30 days will be between $7,000 and $7,500? Round your answer to 4 decimal places.

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Answered: The owner of a convenience store 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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The weights of steers in a herd are distributed normally. The standard deviation is 200lbs200⁢lbs and the mean steer weight is 1000lbs1000⁢lbs. Find the probability that the weight of a randomly selected steer is between 13601360 and 1420lbs1420⁢lbs. Round your answer to four decimal places.
You play a game of chance that you can either win or lose (there are no other possibilities) until you lose. Your probability of losing is p = 0.61. What is the probability that ita. takes 2 games until you lose. b. takes 5 games until you lose. c. Find the mean c. Find the standard deviation.
Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles per day. The mileage per day is distributed normally. Find the probability that a truck drives at least 141 miles in a day. Round your answer to four decimal places.
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One year, the distribution of salaries for professional sports players had mean $1.6 million and standard deviation $0.81 million. Suppose a sample of 100 major league players was taken. Find the approximate probability that the average salary of the 100 players that year exceeded $1.7 million. Round your answer to nearest ten-thousandth.
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u = girl(s). (Round to one decimal place as needed.) The standard deviation is o = girl(s). (Round to one decimal place as needed.)
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