UNDERSTANDING BASIC STATISTICS (LOOSE)
8th Edition
ISBN: 9781337558198
Author: BRASE
Publisher: CENGAGE L
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Textbook Question
Chapter 9.3, Problem 20P
For Problems 7–21, please provide the following information.
(a) What is the level of significance? State the null and alternate hypotheses.
(b) Check Requirements What sampling distribution will you use? Do you think the
(c) Find the P-value of the test statistic. Sketch the sampling distribution and show the area corresponding to the P-value.
(d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level a?
(e) Interpret your conclusion in the context of the application.
Medical: Hypertension Diltiazem is a commonly prescribed drug for hypertension (see source in Problem 19). However, diltiazem causes headaches in about 12% of patients using the drug. It is hypothesized that regular exercise might help reduce the headaches. If a random sample of 209 patients using diltiazem exercised regularly and only 16 had headaches, would this indicate a reduction in the population proportion of patients having headaches? Use a 1% level of significance.
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Test the claim that a student's pulse rate is different when taking a quiz than attending a regular class. The mean pulse rate difference is 2.7 with 10 students. Use a significance level of 0.005.
Pulse rate difference(Quiz - Lecture)
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The following ordered data list shows the data speeds for cell phones used by a
telephone company at an airport:
A. Calculate the Measures of Central Tendency from the ungrouped data list.
B. Group the data in an appropriate frequency table.
C. Calculate the Measures of Central Tendency using the table in point B.
D. Are there differences in the measurements obtained in A and C? Why (give at
least one justified reason)?
I leave the answers to A and B to resolve the remaining two.
0.8
1.4
1.8
1.9
3.2
3.6
4.5
4.5
4.6
6.2
6.5
7.7
7.9
9.9
10.2
10.3
10.9
11.1
11.1
11.6
11.8
12.0
13.1
13.5
13.7
14.1
14.2
14.7
15.0
15.1
15.5
15.8
16.0
17.5
18.2
20.2
21.1
21.5
22.2
22.4
23.1
24.5
25.7
28.5
34.6
38.5
43.0
55.6
71.3
77.8
A. Measures of Central Tendency
We are to calculate:
Mean, Median, Mode
The data (already ordered) is:
0.8, 1.4, 1.8, 1.9, 3.2, 3.6, 4.5, 4.5, 4.6, 6.2, 6.5, 7.7, 7.9, 9.9, 10.2, 10.3, 10.9,
11.1, 11.1, 11.6,
11.8, 12.0, 13.1, 13.5, 13.7, 14.1, 14.2, 14.7, 15.0, 15.1, 15.5,…
PEER REPLY 1:
Choose a classmate's Main Post.
1. Indicate a range of values for the independent variable (x) that is reasonable
based on the data provided.
2. Explain what the predicted range of dependent values should be based on
the range of independent values.
Chapter 9 Solutions
UNDERSTANDING BASIC STATISTICS (LOOSE)
Ch. 9.1 - Statistical Literacy Discuss each of the following...Ch. 9.1 - Statistical Literacy In a statistical test, we...Ch. 9.1 - Statistical Literacy If we fail to reject (i.e.,...Ch. 9.1 - Statistical Literacy If we reject the null...Ch. 9.1 - Statistical Literacy What terminology do we use...Ch. 9.1 - Statistical Literacy What terminology do we use...Ch. 9.1 - Statistical Literacy If the P-value in a...Ch. 9.1 - Statistical Literacy If the P-value in a...Ch. 9.1 - Statistical Literacy Suppose the P-value in a...Ch. 9.1 - Statistical Literacy Suppose the P-value in a...
Ch. 9.1 - Basic Computation: Setting Hypotheses Suppose you...Ch. 9.1 - Basic Computation: Setting Hypotheses Suppose you...Ch. 9.1 - Prob. 13PCh. 9.1 - Basic Computation: Find the Test Statistic....Ch. 9.1 - Veterinary Science: Colts The body weight of a...Ch. 9.1 - Marketing: Shopping Time How much customers buy is...Ch. 9.1 - Meteorology: StormsWeatherwise magazine is...Ch. 9.1 - Ford Mustang: Acceleration Motor Trend stated that...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.2 - Statistical Literacy For the same sample data and...Ch. 9.2 - Statistical Literacy To test for an x...Ch. 9.2 - Statistical Literacy When using the Students t...Ch. 9.2 - Critical Thinking Consider a test for . If the...Ch. 9.2 - Critical Thinking Consider a test for .If the...Ch. 9.2 - Critical Thinking If sample data is such that for...Ch. 9.2 - Basic Computation: P-value Corresponding to t...Ch. 9.2 - Basic Computation: P-value Corresponding to t...Ch. 9.2 - Basic Computation: Testing , Unknown A random...Ch. 9.2 - Basic Computation: Testing , Unknown A random...Ch. 9.2 - (c) Find (or estimate) the P-value. Sketch the...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Critical Thinking: One-Tailed versus Two-Tailed...Ch. 9.2 - Expand Your Knowledge: Two Confidence Intervals...Ch. 9.2 - Prob. 25PCh. 9.2 - Prob. 26PCh. 9.2 - Prob. 27PCh. 9.2 - Prob. 28PCh. 9.2 - Critical Region Method: Student'st Solve Problem...Ch. 9.2 - Critical Region Method: Student'st Solve Problem...Ch. 9.3 - Terminology Answer true or false. The margin of...Ch. 9.3 - Prob. 2PCh. 9.3 - Prob. 3PCh. 9.3 - Terminology Answer true or false. The margin of...Ch. 9.3 - Basic Computation: Testingp A random sample of 30...Ch. 9.3 - Basic Computation: Testingp A random sample of 60...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - Critical Region Method: Testing Proportions Solve...Ch. 9.3 - Prob. 23PCh. 9.3 - Prob. 24PCh. 9 - Terminology Answer each of the following...Ch. 9 - Terminology Answer each of the following...Ch. 9 - Statistical Literacy When testing how do we...Ch. 9 - Statistical Literacy What do we mean when we say a...Ch. 9 - Critical Thinking All other conditions being...Ch. 9 - Critical Thinking All other conditions being...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Prob. 1DHGPCh. 9 - Prob. 1LCWPCh. 9 - Prob. 2LCWPCh. 9 - The following statements are very important. Give...Ch. 9 - Prob. 4LCWPCh. 9 - As access to computers becomes more and more...Ch. 9 - Prob. 1CRPCh. 9 - Prob. 2CRPCh. 9 - Statistical Literacy Please give a careful but...Ch. 9 - Prob. 4CRPCh. 9 - Normal Approximation to the Binomial the majority...Ch. 9 - Prob. 6CRPCh. 9 - Sampling Distribution p Do you have a great deal...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - Prob. 10CRPCh. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
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