APPLIED STAT.IN BUS.+ECONOMICS
6th Edition
ISBN: 9781259957598
Author: DOANE
Publisher: RENT MCG
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Chapter 15, Problem 5CR
a.
To determine
State the hypothesis for GOF test.
b.
To determine
Explain how a chi-square GOF test is carried out in general.
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The degrees of freedom for a 2 x 2 cross-tabulation table for the chi-square test of independence equal
What does the chi-square test of independence test for?
a.if the two variables tested combine somehow to influence the frequencies observed
b.if the two variables are significantly similar to each other
c.if the two variables tested are both dependent on the frequencies
c.if the two variables are significantly different from each other
You obtain a sample chi-square value of x2= -5.49. On the basis of this value, you know that
Chapter 15 Solutions
APPLIED STAT.IN BUS.+ECONOMICS
Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Prob. 5SECh. 15.2 - U.S. market share for smartphones with larger...Ch. 15.2 - Prob. 7SECh. 15.3 - Prob. 8SECh. 15.3 - Prob. 9SECh. 15.3 - In a three-digit lottery, each of the three digits...
Ch. 15.3 - Ages of 56 attendees of a recent Star Wars movie...Ch. 15.4 - Excel was asked to generate 50 Poisson random...Ch. 15.4 - Prob. 13SECh. 15.4 - Prob. 14SECh. 15.5 - Exam scores of 40 students in a statistics class...Ch. 15.5 - One Friday night, there were 42 carry-out orders...Ch. 15.6 - Prob. 17SECh. 15.6 - Prob. 18SECh. 15 - Prob. 1CRCh. 15 - Prob. 2CRCh. 15 - Prob. 3CRCh. 15 - Prob. 4CRCh. 15 - Prob. 5CRCh. 15 - Prob. 6CRCh. 15 - Prob. 7CRCh. 15 - Prob. 8CRCh. 15 - Prob. 9CRCh. 15 - Prob. 10CRCh. 15 - (a) Name potential advantages of the...Ch. 15 - (a) What does a probability plot show? (b) If the...Ch. 15 - (a) Name two advantages of the Anderson-Darling...Ch. 15 - Prob. 19CECh. 15 - Prob. 20CECh. 15 - Prob. 21CECh. 15 - Prob. 22CECh. 15 - Prob. 23CECh. 15 - Prob. 24CECh. 15 - Instructions: In all exercises, include software...Ch. 15 - Prob. 26CECh. 15 - Prob. 27CECh. 15 - Prob. 28CECh. 15 - Prob. 29CECh. 15 - Prob. 30CECh. 15 - Prob. 31CECh. 15 - Prob. 32CECh. 15 - Prob. 33CECh. 15 - Prob. 34CECh. 15 - Prob. 35CECh. 15 - Prob. 36CECh. 15 - Prob. 37CECh. 15 - Prob. 38CECh. 15 - Instructions: In all exercises, include software...Ch. 15 - Instructions: In all exercises, include software...Ch. 15 - Instructions: In all exercises, include software...
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- A chi square test for homogeneity applies to: Select one: a. data from a single random sample where the sample is classified by values of three or more categorical variables. b. data from samples from two or more populations where each sample is classified by values of two categorical variables. c. data from samples from two or more populations where each sample is classified by values of a single categorical variable. d. data from a single random sample where the sample is classified by values of two categorical variables.arrow_forwardTest at 0.05 level of significance to test the null hypothesis that there is no significant difference among the six on four different treatments. Pick one method to be used: Chi-Square Test Mann Whitney U Test Spearman Rank and Friedman Test Mc Nemar’s Test for Correlated Proportions Kendall’s Coefficient of Concordance W Kolmogorov-Smirnov Test After picking one method to be used, answer the following: What test method to be used: Computed Value: Tabular Value: Conclusion:arrow_forwardFor a chi square test of independence, with 3 rows and 2 columns, what is the degrees of freedom?arrow_forward
- Tukey Test A display of the Bonferroni test results from Table 12-1 (which is part of the Chapter Problem) is provided on page 577. Shown on the top of the next page is the SPSS-generated display of results from the Tukey test using the same data. Compare the Tukey test results to those from the Bonferroni test. SPSSarrow_forwardRegarding the test of significance for the usefulness of the predictor variables x1, x2, and x3 in predicting y, which of the three sums of squares gures in its calculation?arrow_forwardA local restaurant claims that it gets 45 percent of its customers from Monday through Thursday, 20 percent on Friday, 20 percent on Saturday, and 15 percent on Sunday. How many degrees of freedom should be used to conduct a chi-square goodness-of-fit test of the claim? A) 3B) 4C) 6D) 7E) It is not possible to determine the degrees of freedom without knowing the sample size.arrow_forward
- A veterinary study of horses looked at water sources for horses, and the investigators found that horses received water from a well, from city water, or from a stream. The investigators wanted to know if horses are equally likely to get water from each of those three sources. They collected data and observed the given values. Water Source Well City Water Stream Total Observed count 62 43 31 136 The cell that contributed least to the chi-square goodness-of-fit statistic is: - The city water cell with = 0.1201 - The well water cell with = 6.13 - The stream water cell with = 0.1201 - The city water cell with = 1/3arrow_forwardIn the chi-square tests, the test statistics formula uses O and E notations. Explain the circumstancesunder which the chi-square test statistic values will be smaller or largerarrow_forwardIn 1912, the Titanic hit an iceberg, and subsequently sank, with 2201 passengers and crew members on board. The mortality rate among the passengers and crew members is shown in the table below. a) What is the degrees of freedom for a chi-square test? b) What is the expected cell frequency for First Class people who died in the accident? Show work. c) what is the component for the same cell? d) What is the standard residual for the cell? e) Assuming all conditions and assumptions are met, what is the P-value for a chi-square test for independence?arrow_forward
- From the resulted chi square value & degrees of freedom & the following table: calculate your p-value , and what is your hypothesis ?arrow_forwardif the results of a study using the chi-square tests are summarized as x2 ( 1,N=360) = 10.00,p<.01,then you would know that it was a what study?arrow_forwardA fisheries biologist collected a random sample of fish from a lake and conducted a chi-square goodness-of-fit test to see if the distribution of fish changed over time. The table below shows the distribution of fish that were put into the lake when it was originally stocked. Fish Type Trout Bass Perch Sunfish Catfish Percent 25% 25% 20% 15% 15% The biologist found evidence to reject the null hypothesis in favor of the alternative hypothesis. Which of the following represents the alternative hypothesis of the test?arrow_forward
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Chi Square test; Author: Vectors Academy;https://www.youtube.com/watch?v=f53nXHoMXx4;License: Standard YouTube License, CC-BY