Essential Statistics for the Behavioral Sciences
2nd Edition
ISBN: 9781506386300
Author: Gregory J. Privitera
Publisher: SAGE Publications, Inc
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Chapter 7, Problem 9FP
To determine
To explain: The use of beta
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Alpha (a) is used to measure the error for decisions concerning true null hypotheses. What is beta (ß) error used to measure?
why are large x2 values sometimes obtained when the null hypothesis true?
Expression levels of GeneA and GeneB were measured in 10 cell lines. The researcher would liketo know if expression levels of GeneA and GeneB are related.a. Use a parametric method to test if GeneA and GeneB are correlated.b. Use a non-parametric method to test if GeneA and GeneB are correlated.
Carry out all above tests for α = 0.05.Please solve manually not using software program .
Chapter 7 Solutions
Essential Statistics for the Behavioral Sciences
Ch. 7 - Prob. 1FPCh. 7 - Prob. 2FPCh. 7 - Prob. 3FPCh. 7 - Prob. 4FPCh. 7 - Prob. 5FPCh. 7 - Prob. 6FPCh. 7 - Prob. 7FPCh. 7 - Prob. 8FPCh. 7 - Prob. 9FPCh. 7 - Prob. 10FP
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- Pose a null and alternate hypothesis for a two sample t-test using variables: Male and Female, Asthma, number of injuries, or flu shot. Can any of the variables also be used to do a Chi square test or a NOVA test?arrow_forwardIn a Munich high school, A class has 20 students, the instructor gave two exams, one take home exam and one live exam. He inspected the answers of the students and scored them for their similarity to rest of the class. (in the picture) Was the similarity of the answers higher in the Take Home exam or Live Exam? Perform a hypothesis test on differences to make your decision, use α = 0.05.(Non-parametric Test)arrow_forwardTest the claim that an increase of 5 hours of work results on average in 10 points lower test scores. State the null and the alternative hypotheses.arrow_forward
- How do we find the gamma and the p-value to evaluate the hypothesis that people who are more satisfied with their jobs are more likely to be happily married than those who are less satisfied with their jobs? The table is attatched.arrow_forwardQ1 (a) Identify the type I error and the type II error that correspond to the given hypothesis: (i) The mean score of IQ test is less than 95 (ii) The mean amount of soya bean drink in cans is equal to 325 mlarrow_forwardwe can make a causal claim from the results of the chi-square test correct?arrow_forward
- What values of F indicate that the null hypothesis is true?arrow_forwardThe owner of a movie theater company would like to predict weekly gross revenue as a function of advertising expenditures. Historical data for a sample of eight weeks follow. Weekly Television Newspaper Advertising Advertising ($1,000s) Gross Revenue ($1,000s) ($1,000s) 96 5 1.5 91 2 95 1.5 92 2.5 2.5 95 3 3.3 94 3.5 2.3 94 2.5 4.1 94 3 2.5 (a) Use a = 0.01 to test the hypotheses Hoiß = B2 = 0 H:B, and/or B, is not equal to zero for the model y = B, + B,x, + B2x2 + E, where x, = television advertising ($1,000s) X, = newspaper advertising ($1,000s). Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = | State your conclusion. O Reject H,. There is insufficient evidence to conclude that there is a significant relationship among the variables. O Do not reject H,. There is sufficient evidence to conclude that there is a significant relationship among the variables. O Do not reject H,. There…arrow_forward2) Is the proportion of women at StatCrunchU equal to the proportion of men at StatCrunchU? Show that the conditions are met for the use of a normal model for a hypothesis test (np > 10 and n(1 - p) >10, where p is from the null hypothesis). Test the claim that the proportion of females at StatCrunchU is equal to the proportion of men. Document your hypothesis test in hypothesis test format in your submission. Write a conclusion to your hypothesis test referring to females at StatCrunchU. Explain what the P-value means as a probability that refers to random samples of 50 StatCrunchU students. Gender Class Hours Work Loans CC Debt Female 2 11 22 7122 2202 Female 4 9 26.5 15367 4139 Female 2 16 14.5 8164 3205 Female 4 15 15 0 7611 Male 4 12 19 16014 8959 Male 1 16 0 0 1658 Female 3 9 24.5 11997 4418 Female 1 16 17.5 2543 0 Male 4 20 6.5…arrow_forward
- The data in the table below presents the hourly quantity of production for three lines of production processes over the first 4 days in XYZ Company. Answer the questions based on the Excel Output given in the picture below. State the null and alternative hypothesis for single factor ANOVA. State the decision rule (α = 0.05). Calculate the test statistic. Make a decision.arrow_forwardIf an independent variable's null hypothesis is rejected, it should remain in the model. True Falsearrow_forwardThe linear correlation coefficient r= Determine the null and alternative hypotheses.arrow_forward
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