The Pasadena fire department aims to respond to fire calls in 8 minutes or less, on average. Response times are normally distributed with a standard deviation of 1 minute 48 seconds. Would a sample of 18 fire calls with a mean response time of 8 minutes 49 seconds provide sufficient evidence to show that the goal is not being met at α = .01? Calculate the value of the test statisti. Round it to two decimals.

The Pasadena fire department aims to respond to fire calls in 8 minutes or less, on average. Response times are normally distributed with a standard deviation of 1 minute 48 seconds. Would a sample of 18 fire calls with a mean response time of 8 minutes 49 seconds provide sufficient evidence to show that the goal is not being met at α = .01? Calculate the value of the test statisti. Round it to two decimals.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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Calculate the value of the test statisti. Round it to two decimals.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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