Connect Hosted by ALEKS Online Access for Elementary Statistics
3rd Edition
ISBN: 9781260373769
Author: William Navidi
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 14.1, Problem 23E
Artificial hips: Using the data in Exercise 21, perform the Tukey-Kramer test to determine which pairs of means, if any, differ. Use the
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A research study wanted to examine whether religious belief and gender are related in their state. They selected a representative sample of men and women in their State.Select the null and alternative hypothesis of the test:
H0: there is no relationship between gender and belief about human originsHa: there is a relationship between gender and belief about human originsH0: there is a relationship between gender and belief about human originsHa: there is no relationship between gender and belief about human origins
Results of the study are summarized in this table for the Belief about human origins:
religious texts
evolutionary theory
total
male
30
36
66
female
104
89
193
total
134
125
259
The degrees of freedom for the the ?2 statistic are Round the following numbers to two places after the decimal:The test statistic is ?2 = with a p-value = The conclusion of the test at the 5% significance level is
There is not enough statistical evidence to suggest that gender and…
A research study wanted to examine whether religious belief and gender are related in their state. They selected a representative sample of men and women in their State.Select the null and alternative hypothesis of the test:
H0: there is no relationship between gender and belief about human originsHa: there is a relationship between gender and belief about human origins
H0: there is a relationship between gender and belief about human originsHa: there is no relationship between gender and belief about human origins
Results of the study are summarized in this table for the Belief about human origins:
religious texts
evolutionary theory
total
male
30
36
66
female
110
89
199
total
140
125
265
The degrees of freedom for the the ?2 statistic are Round the following numbers to two places after the decimal:The test statistic is ?2 = with a p-value = The conclusion of the test at the 5% significance level is
There is not enough statistical evidence to suggest that gender…
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Chapter 14 Solutions
Connect Hosted by ALEKS Online Access for Elementary Statistics
Ch. 14.1 - In Exercises 7 and 8, fill in each blank with the...Ch. 14.1 - Prob. 8ECh. 14.1 - Prob. 9ECh. 14.1 - Prob. 10ECh. 14.1 - Prob. 11ECh. 14.1 - Prob. 12ECh. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - Samples were drawn from three populations. The...Ch. 14.1 - Samples were drawn from three populations. The...
Ch. 14.1 - Pesticide danger: One of the factors that...Ch. 14.1 - Life-saving drug: Penicillin is produced by the...Ch. 14.1 - Pesticide danger: Using the data in Exercise 17,...Ch. 14.1 - Life-saving drug: Using the data in Exercise 18,...Ch. 14.1 - Artificial hips: Artificial hip joints consist of...Ch. 14.1 - Floods: Rapid drainage of floodwater is crucial to...Ch. 14.1 - Artificial hips: Using the data in Exercise 21,...Ch. 14.1 - Floods: Using the data in Exercise 22, perform the...Ch. 14.1 - Polluting power plants: Power plants can emit...Ch. 14.1 - Prob. 26ECh. 14.1 - Prob. 27ECh. 14.1 - Prob. 28ECh. 14.1 - Prob. 29ECh. 14.1 - Prob. 30ECh. 14.1 - Prob. 31ECh. 14.2 - Prob. 5ECh. 14.2 - Prob. 6ECh. 14.2 - Prob. 7ECh. 14.2 - Prob. 8ECh. 14.2 - In a two-way ANOVA, the P-value for interactions...Ch. 14.2 - Prob. 10ECh. 14.2 - Prob. 11ECh. 14.2 - Prob. 12ECh. 14.2 - Prob. 13ECh. 14.2 - Prob. 14ECh. 14.2 - Prob. 15ECh. 14.2 - Prob. 16ECh. 14.2 - Prob. 17ECh. 14.2 - Prob. 18ECh. 14.2 - Prob. 19ECh. 14.2 - Prob. 20ECh. 14.2 - Prob. 21ECh. 14.2 - Prob. 22ECh. 14.2 - Prob. 23ECh. 14.2 - Strong beams: The following table presents...Ch. 14.2 - Prob. 25ECh. 14.2 - Prob. 26ECh. 14.2 - Fruit yields: An agricultural scientist performed...Ch. 14.2 - Prob. 28ECh. 14.2 - Prob. 29ECh. 14 - Exercises 1-4 refer to the following data: At a...Ch. 14 - Prob. 2CQCh. 14 - Prob. 3CQCh. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Prob. 7CQCh. 14 - Prob. 8CQCh. 14 - Prob. 9CQCh. 14 - Prob. 10CQCh. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Prob. 4RECh. 14 - Prob. 5RECh. 14 - Prob. 6RECh. 14 - Prob. 7RECh. 14 - Prob. 8RECh. 14 - Prob. 9RECh. 14 - Prob. 10RECh. 14 - Prob. 11RECh. 14 - Prob. 12RECh. 14 - Prob. 13RECh. 14 - Prob. 14RECh. 14 - Prob. 15RECh. 14 - Prob. 1WAICh. 14 - Prob. 2WAICh. 14 - Prob. 3WAICh. 14 - Prob. 4WAICh. 14 - Prob. 5WAICh. 14 - Prob. 1CSCh. 14 - Prob. 2CSCh. 14 - Prob. 3CSCh. 14 - Prob. 4CS
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- What is an experiment? Give two examples.arrow_forwardFor the following exercises, assume two die are rolled. 47. Construct a table showing the sample space.arrow_forwardApplication Exercise: Dr. Mussey used a measure to classify children as showing some form of learning disorder. She also examined school records and noted which were enrolled in a remedial Math. Below is the contingency table of the data. What can be concluded with an a of 0.01? Remedial Disorder yes no none 23 78 dyslexia 25 75 ADHD 20 20 T) What is the appropriate test statistic? --Select- Compute the statistic selected in a): U Obtain/compute the appropriate values to make a decision about Ho. Critical Value = ; Test Statistic = Decision: ---Select- v Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = ; Magnitude: --Select-- wMake an interpretation based on the results. O There is a significant relationship between learning disorder and the school. O There is a significant learning disorder difference in remedial Math. O There is no relationship between learning disorder and remedial Math.arrow_forward
- Exercise 2: The school board of Two Guns, Texas is deeply concerned that their public school teachers are quitting their jobs and accepting teaching positions in other parts of the state. Some members of the school board think that the reason why teachers are quitting is because their weekly salaries are lower than those offered by other school boards in the state. The school board hires you to conduct a significance test. The research question: Do teachers in other parts of Texas earn higher average weekly salaries than those working in the Two Guns school district? There is no estimate of the population standard deviations. The significance level will be set at 5%. Step 1: Test Set-up Question 1: How large a sample is needed to achieve 80% statistical power? Based on past research Cohen's d effect size is estimated at 0.40, which is a small effect. See the table below: Cohen's d ES Thresholds Small 0.2 Medium 0.5 Large 0.8 Here are the results of an a priori power analysis run using…arrow_forwardDoes training in stress reduction make a difference for student success? 15 students received training (M1= 88, SS1= 400) and 15 students did not (M2= 82, SS2= 440). Test using α = .05 The correct APA format for the result would includearrow_forwardSelect all the studies where the explanatory variable is measured at the same time as the outcome variable. Clinical Trial Case-Control Cross-Sectional Cohort A survey where a large portion of those under the age of 25 in the sample did not answer the questions about drug use is an example of what type of bias? Selection Measurement Respone Non-Response When the population of interest is everyone in a high school, but only people who attend the sporting events are recruited into the sample, this is an example of what kind of bias? Selection Measurement Respone Non-Responsearrow_forward
- Application Exercise: Dr. Butler is interested in the preference for dog breeds among college students. She collected the observed frequencies below and wants to know if the breeds are equally preferred. What can be concluded with an a of 0.05? Irish Setter Golden Retriever Papillon Great Dane 101 94 135 97 L What is the appropriate test statistic? -Select Compute the statistic selected in : M Obtain/compute the appropriate values to make a decision about Hg. Critical Value = | J: Test Statistic = Decision: -Select- N Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = | ]: Magnitude: -Select-- Make an interpretation based on the results. O There is a significant relationship between dog breeds and college students. There is a significant dog breed preference among college students. O Dog breeds are equally preferred among college students.arrow_forwardt test for Independent Means Professor Smith hypothesizes that type of TV show impacts people’s mood. To study this, she uses two groups: the experimental group who watches reality TV shows for three hours, while the control group watches the news for three hours. Each of the groups then completes an assessment of mood. In all, 32 people participate: 17 watch reality TV shows and 15 watch the news. The Mean, Sample Size, and SS for each group are below. Using these data, conduct a t test (p<.05) to determine if TV show type had an impact on an individual’s mood. Reality TV Shows: News: N = 17 N = 15 M = 34 M = 24 SS = 340 SS = 251 Step 1) Create a research hypothesis and a null hypothesis about the populations. Null hypothesis (H0): Research hypothesis (HA): Step 2) Determine the characteristics of the comparison distribution. Degrees of freedom for experimental group and control group = df1 =…arrow_forwardhomework helparrow_forward
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