A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 735 hours. A random sample of 26 light bulbs has a mean life of 710 hours. Assume the population is normally distributed and the population standard deviation is 59 hours. At α=0.05, do you have enough evidence to reject the manufacturer's claim? Identify Ho and Ha find the critical value(s) and sketch region calculate the test statistic and add it to the sketch Do you reject the Ho or fail to reject Ha

A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 735 hours. A random sample of 26 light bulbs has a mean life of 710 hours. Assume the population is normally distributed and the population standard deviation is 59 hours. At α=0.05, do you have enough evidence to reject the manufacturer's claim? Identify Ho and Ha find the critical value(s) and sketch region calculate the test statistic and add it to the sketch Do you reject the Ho or fail to reject Ha

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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Question

Identify Ho and Ha

find the critical value(s) and sketch region

calculate the test statistic and add it to the sketch

Do you reject the Ho or fail to reject Ha

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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