Rob Raydo, a data analyst in a certain bank, found that the mean amount of credit card debt per household in households having credit card debt is 30,000 pesos with a standard deviation of 25,000 pesos. Find the probability that the mean amount of credit card debt in a sample of 100 households is less than 25,000 pesos.  2. Moore Reno, an officer in the highway patrol group, observed that the speeds of vehicles on a particular stretch of a specific highway are normally distributed with a mean of 90 kph and a standard deviation of 50 kph. Find the probability that the mean speed of 25 randomly selected vehicles is between 75 and 100 kph.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1. Rob Raydo, a data analyst in a certain bank, found that the mean amount of credit card debt per household in households having credit card debt is 30,000 pesos with a standard deviation of 25,000 pesos. Find the probability that the mean amount of credit card debt in a sample of 100 households is
less than 25,000 pesos. 

2. Moore Reno, an officer in the highway patrol group, observed that the speeds of vehicles on a particular stretch of a specific highway are normally distributed with a mean of 90 kph and a standard deviation of 50 kph. Find the probability that the mean speed of 25 randomly selected vehicles is between 75 and
100 kph.

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