ELEMENTARY STAT.USING EXCEL-MYSTATLAB
7th Edition
ISBN: 9780136961970
Author: Triola
Publisher: PEARSON
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Chapter 8.3, Problem 8BSC
To determine
To find: The P -value for the provided test statistic. Also, draw the final conclusion.
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For each of the time series, construct a line chart of the data and identify the characteristics of the time series (that is, random, stationary, trend, seasonal, or cyclical).
Date IBM9/7/2010 $125.959/8/2010 $126.089/9/2010 $126.369/10/2010 $127.999/13/2010 $129.619/14/2010 $128.859/15/2010 $129.439/16/2010 $129.679/17/2010 $130.199/20/2010 $131.79
a. Construct a line chart of the closing stock prices data. Choose the correct chart below.
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Date IBM9/7/2010 $125.959/8/2010 $126.089/9/2010 $126.369/10/2010 $127.999/13/2010 $129.619/14/2010 $128.859/15/2010 $129.439/16/2010 $129.679/17/2010 $130.199/20/2010 $131.79
1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
employees has a mean workday of 8.2 hours. Assume the population standard deviation is 0.5
hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
Statistics
Chapter 8 Solutions
ELEMENTARY STAT.USING EXCEL-MYSTATLAB
Ch. 8.1 - 4. Interpreting P-value The Ericsson method is one...Ch. 8.1 - Prob. 5BSCCh. 8.1 - Prob. 6BSCCh. 8.1 - Prob. 7BSCCh. 8.1 - Prob. 8BSCCh. 8.1 - Prob. 29BBCh. 8.1 - Prob. 30BBCh. 8.1 - Prob. 31BBCh. 8.2 - Prob. 5BSCCh. 8.2 - Prob. 8BSC
Ch. 8.2 - Testing Claims About Proportions. In Exercises 9 –...Ch. 8.2 - Prob. 14BSCCh. 8.2 - Prob. 17BSCCh. 8.2 - Prob. 18BSCCh. 8.2 - Prob. 19BSCCh. 8.2 - Prob. 21BSCCh. 8.2 - Prob. 27BSCCh. 8.2 - Prob. 28BSCCh. 8.2 - Prob. 30BSCCh. 8.2 - Prob. 31BSCCh. 8.2 - Prob. 33BBCh. 8.2 - Prob. 34BBCh. 8.2 - Prob. 35BBCh. 8.3 - Prob. 5BSCCh. 8.3 - Prob. 6BSCCh. 8.3 - Prob. 7BSCCh. 8.3 - Prob. 8BSCCh. 8.3 - Prob. 17BSCCh. 8.3 - Testing Hypotheses. In Exercises 13–24, assume...Ch. 8.3 - Prob. 19BSCCh. 8.3 - Prob. 20BSCCh. 8.3 - Prob. 21BSCCh. 8.3 - Prob. 22BSCCh. 8.4 - Prob. 5BSCCh. 8.4 - Prob. 6BSCCh. 8.4 - Prob. 7BSCCh. 8.4 - Prob. 8BSCCh. 8.4 - Prob. 12BSCCh. 8.4 - Prob. 13BSCCh. 8.4 - Prob. 14BSCCh. 8.4 - Prob. 16BSCCh. 8.4 - Prob. 19BBCh. 8.4 - Prob. 20BBCh. 8 - Prob. 2CRECh. 8 - Red Blood Cell Count A simple random sample of 40...Ch. 8 - Prob. 5CRECh. 8 - Lightning Deaths Based on the results given in...Ch. 8 - Prob. 1EP
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