EP STATISTICS-MYLAB STATISTICS W/ETEXT
13th Edition
ISBN: 9780135959824
Author: MCCLAVE
Publisher: PEARSON CO
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Chapter 8, Problem 162ACI
To determine
Check whether the sample provide sufficient evidence to indicate that the new instrument is more reliable than the instrument in use at present using the level of significance,
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The table below shows the estimated effects for a logistic regression model with squamous cell esophageal cancer (Y = 1, yes; Y = 0, no) as the response. Smoking status (S) equals 1 for at least one pack per day and 0 otherwise, alcohol consumption (A) equals the average number of alcohoic drinks consumed per day, and race (R) equals 1 for blacks and 0 for whites.
Variable
Effect (β)
P-value
Intercept
-7.00
<0.01
Alcohol use
0.10
0.03
Smoking
1.20
<0.01
Race
0.30
0.02
Race × smoking
0.20
0.04
Write-out the prediction equation (i.e., the logistic regression model) when R = 0 and again when R = 1. Find the fitted Y S conditional odds ratio in each case.
Next, write-out the logistic regression model when S = 0 and again when S = 1. Find the fitted Y R conditional odds ratio in each case.
The chi-squared goodness-of-fit test can be used to test if data comes from a specific continuous distribution by binning the data to make it
categorical.
Using the OpenIntro Statistics county_complete dataset, test the hypothesis that the persons_per_household 2019 values come from a normal
distribution with mean and standard deviation equal to that variable's mean and standard deviation. Use signficance level a = 0.01.
In your solution you should
1. Formulate the hypotheses
2. Fill in this table
Range
(-⁰⁰, 2.34]
(2.34, 2.81]
(2.81, 3.27]
(3.27,00)
Observed
802
Expected
854.2
The first row has been filled in. That should give you a hint for how to calculate the expected frequencies. Remember that the expected
frequencies are calculated under the assumption that the null hypothesis is true.
FYI, the bounderies for each range were obtained using JASP's drag-and-drop cut function with 8 levels. Then some of the groups were
merged.
3. Check any conditions required by the chi-squared…
Suppose that you want to estimate the mean monthly gross income of all households in your local community. You decide to estimate this population parameter by calling 150 randomly selected residents and asking each individual to report the household’s monthly income. Assume that you use the local phone directory as the frame in selecting the households to be included in your sample.
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Chapter 8 Solutions
EP STATISTICS-MYLAB STATISTICS W/ETEXT
Ch. 8.2 - Prob. 1UPCh. 8.2 - 7.2 Which element of a test of hypothesis is used...Ch. 8.2 - 7.3 What is the level of significance of a test of...Ch. 8.2 - 7.4 What is the difference between Type I and Type...Ch. 8.2 - Prob. 5UPCh. 8.2 - We (generally) reject the null hypothesis when the...Ch. 8.2 - 7.7 If you test a hypothesis and reject the null...Ch. 8.2 - Consider a test of H0: μ = 4. In each of the...Ch. 8.2 - 7.8 For each of the following rejection regions,...Ch. 8.2 - Use the applet Hypothesis Test for a Mean to...
Ch. 8.2 - Walking to improve health. In a study...Ch. 8.2 - Americans’ favorite sport. The Harris Poll (Dec....Ch. 8.2 - Infants’ listening time. Researchers writing in...Ch. 8.2 - 7.10 Play Golf America program. The Professional...Ch. 8.2 - Effectiveness of online courses. The Sloan Survey...Ch. 8.2 - DNA-reading tool for quick identification of...Ch. 8.2 - Calories in school lunches. The U.S. Department of...Ch. 8.2 - 7.12 A border protection avatar. The National...Ch. 8.2 - Virtual reality hypnosis for pain. The...Ch. 8.2 - Mercury levels in wading birds. According to a...Ch. 8.2 - 7.17 Jury trial outcomes. Sometimes, the outcome...Ch. 8.2 - Prob. 21ACACh. 8.3 - 7.19 Consider the test of H0: μ = 7. For each of...Ch. 8.3 - 7.20 If a hypothesis test were conducted using α =...Ch. 8.3 - 7.21 For each α and observed significance level...Ch. 8.3 - 7.22 In a test of the hypothesis H0: μ = 50 versus...Ch. 8.3 - 7.23 In a test of H0: μ = 100 against Ha: μ > 100...Ch. 8.3 - Prob. 27LMCh. 8.3 - Prob. 28LMCh. 8.3 - Prob. 29LMCh. 8.3 - 7.27 An analyst tested the null hypothesis that μ...Ch. 8.4 - What conditions are required for a valid...Ch. 8.4 - For what values of the test statistic do you...Ch. 8.4 - 7.30 A random sample of 100 observations from a...Ch. 8.4 - 7.31 A random sample of 64 observations produced...Ch. 8.4 - Suppose you are interested in conducting the...Ch. 8.4 - Use the applet Hypotheses Test for a Mean to...Ch. 8.4 - Use the applet Hypotheses Test for a Mean to...Ch. 8.4 - Use the applet Hypotheses Test for a Mean to...Ch. 8.4 - Stability of compounds in new drugs. Refer to the...Ch. 8.4 - Corporate sustainability of CPA firms. Refer to...Ch. 8.4 - Speeding and young drivers. Psychologists...Ch. 8.4 - Emotional empathy in young adults. According to a...Ch. 8.4 - Prob. 40ACBCh. 8.4 - 7.35 Facial structure of CEOs. Refer to the...Ch. 8.4 - 7.33 Packaging of a children’s health food. Can...Ch. 8.4 - Prob. 43ACICh. 8.4 - Birth order and IQ. An international team of...Ch. 8.4 - Prob. 45ACICh. 8.4 - Cooling method for gas turbines. A popular cooling...Ch. 8.4 - Irrelevant speech effects. Refer to the Acoustical...Ch. 8.4 - 7.39 Time required to complete a task. When a...Ch. 8.4 -
Social interaction of mental patients. The...Ch. 8.4 - Instructing English-as-a-first-language learners....Ch. 8.5 - In what ways are the distributions of the...Ch. 8.5 - Under what circumstances should you use the...Ch. 8.5 - For each of the following rejection regions,...Ch. 8.5 - For each of the rejection regions defined in...Ch. 8.5 - A random sample of n observations is selected from...Ch. 8.5 - The following sample of six measurements was...Ch. 8.5 - 7.50 A sample of five measurements, randomly...Ch. 8.5 - Prob. 58LMCh. 8.5 - Prob. 59ACBCh. 8.5 - Prob. 60ACBCh. 8.5 - Dental anxiety study. Refer to the BMC Oral...Ch. 8.5 - Crab spiders hiding on flowers. Refer to...Ch. 8.5 - Prob. 63ACBCh. 8.5 - Radon exposure in Egyptian tombs. Refer to the...Ch. 8.5 - Prob. 65ACICh. 8.5 - Pitch memory of amusiacs. Amusia is a congenital...Ch. 8.5 - Free recall memory strategy. Psychologists who...Ch. 8.5 - Prob. 68ACICh. 8.5 - Prob. 69ACICh. 8.5 - Prob. 70ACICh. 8.5 - Prob. 71ACICh. 8.5 - Prob. 72ACACh. 8.6 - What type of data, quantitative or qualitative, is...Ch. 8.6 - What conditions are required for a valid...Ch. 8.6 - For the binomial sample sizes and...Ch. 8.6 - Suppose a random sample of 100 observations from a...Ch. 8.6 - Suppose the sample in Exercise 8.76 has produced ...Ch. 8.6 - A random sample of 100 observations is selected...Ch. 8.6 - Refer to Exercise 7.58 (p. 342). in which 50...Ch. 8.6 - Use the applet Hypotheses Test for a Proportion to...Ch. 8.6 - Use the applet Hypotheses Test for a Proportion to...Ch. 8.6 - Paying for music downloads. If you use the...Ch. 8.6 - Underwater sound-locating ability of alligators....Ch. 8.6 - Gummy bears: red or yellow? Chance (Winter 2010)...Ch. 8.6 - 7.76 Dehorning of dairy calves. For safety...Ch. 8.6 - Teenagers’ use of emoticons in school writing....Ch. 8.6 - 7.71 TV subscription streaming. “Streaming” of...Ch. 8.6 - Underwater acoustic communication. Refer to...Ch. 8.6 - Identifying organisms using a computer. National...Ch. 8.6 - 7.75 Organic-certified coffee. Coffee markets that...Ch. 8.6 - Detection of motorcycles while driving. The...Ch. 8.6 - Defensibility of a landscape. Settlers often chose...Ch. 8.6 - Astronomy students and the Big Bang Theory....Ch. 8.6 - Prob. 92ACACh. 8.6 - Prob. 93ACACh. 8.7 - Define the power of the test.
Ch. 8.7 - Prob. 95UPCh. 8.7 - Prob. 96UPCh. 8.7 - Prob. 97LMCh. 8.7 - Refer to Exercise 8.97.
If μ = 1,040 instead of...Ch. 8.7 - Prob. 99LMCh. 8.7 - Refer to Exercise 8.99.
Find β for each of the...Ch. 8.7 - Prob. 101LMCh. 8.7 - Prob. 102ACICh. 8.7 - Prob. 103ACICh. 8.7 - Gas mileage of the Honda Civic. According to the...Ch. 8.7 - Prob. 105ACICh. 8.7 - Prob. 106ACICh. 8.7 - Prob. 107ACICh. 8.8 - What sampling distribution is used to make...Ch. 8.8 - Prob. 109UPCh. 8.8 - Prob. 110UPCh. 8.8 - Prob. 111UPCh. 8.8 - Prob. 112LMCh. 8.8 - Prob. 113LMCh. 8.8 - Prob. 114LMCh. 8.8 - Prob. 115LMCh. 8.8 - Prob. 116LMCh. 8.8 - Prob. 117ACBCh. 8.8 - Prob. 118ACBCh. 8.8 - Characteristics of a rockfall. Refer to the...Ch. 8.8 - Prob. 120ACBCh. 8.8 - Prob. 121ACBCh. 8.8 - Oil content of fried sweet potato chips. Refer to...Ch. 8.8 - Prob. 123ACICh. 8.8 - Prob. 124ACICh. 8.8 - Prob. 125ACICh. 8.8 - Prob. 126ACICh. 8.8 - Prob. 127ACICh. 8.8 - Motivation of drug dealers. Refer to the Applied...Ch. 8 - Prob. 129UPCh. 8 - Prob. 130UPCh. 8 - Prob. 131UPCh. 8 - Prob. 132UPCh. 8 - Prob. 133UPCh. 8 - Prob. 134LMCh. 8 -
A random sample of n = 200 observations from a...Ch. 8 - Prob. 136LMCh. 8 - Prob. 137LMCh. 8 - Prob. 138LMCh. 8 - Prob. 139ACBCh. 8 - Prob. 140ACBCh. 8 - Prob. 141ACBCh. 8 - Prob. 142ACBCh. 8 - Accounting and Machiavellianism. Behavioral...Ch. 8 - Prob. 144ACBCh. 8 - Prob. 145ACBCh. 8 - Prob. 146ACBCh. 8 - Prob. 147ACBCh. 8 - Prob. 148ACBCh. 8 - Prob. 149ACBCh. 8 - Prob. 150ACICh. 8 - Prob. 151ACICh. 8 - Prob. 152ACICh. 8 - Prob. 153ACICh. 8 - Prob. 154ACICh. 8 - Single-parent families. Examining data collected...Ch. 8 - Prob. 156ACICh. 8 - Prob. 157ACICh. 8 - Prob. 158ACICh. 8 - Prob. 159ACICh. 8 - Prob. 160ACICh. 8 - Prob. 161ACICh. 8 - Prob. 162ACICh. 8 - Prob. 163ACICh. 8 - Prob. 164ACICh. 8 - Prob. 165ACACh. 8 - Parents who condone spanking. In Exercise 4.138...Ch. 8 - Prob. 167ACACh. 8 - Prob. 168ACACh. 8 - Prob. 169CTCCh. 8 - Prob. 170CTC
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