Use the following contingency B 35 35 70 1 2 Total 1 2 A 10 35 45 table to complete (a) and (b) below. Total 90 110 200 C 45 40 85 a. Compute the expected frequencies for each cell. A B C (Type integers or decimals. Do not round.)
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Compute the expected frequencies for each cell
Compute X^2 STAT. Is it significant at a = 0.01?
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- Ashton surveyed the students in his neighborhood and obtained the following contingency table that summarizes the school enrollment by level and type:Use the following contingency table to complete (a) and (b) below. A B C Total 1 15 25 50 90 2 40 50 60 150 Total 55 75 110 240 Question content area bottom Part 1 a. Compute the expected frequencies for each cell. A B C 1 enter your response here enter your response here enter your response here 2 enter your response here enter your response here enter your response here (Type integers or decimals. Do not round.) Part 2 b. Compute χ2STAT. Is it significant at α=0.005? Set up the null and alternative hypotheses to test. Choose the correct answer below. A. H0: π1=π2 H1: Not all πj are equal (where j=1,2) B.H0: Not all πj are equal (where j=A,B, C) H1: πA=πB=πC C.H0:Not all πj are equal (where…Please complete part 3. Use the following contingency table to complete (a) and (b) below. A B C Total 1 15 35 40 90 2 40 50 60 150 Total 55 85 100 240 Question content area bottom Part 1 a. Compute the expected frequencies for each cell. A B C 1 20.62520.625 31.87531.875 37.537.5 2 34.37534.375 53.12553.125 62.562.5 (Type integers or decimals. Do not round.) Part 2 b. Compute χ2STAT. Is it significant at α=0.005? Set up the null and alternative hypotheses to test. Choose the correct answer below. A.H0:πA=πB=πC H1:Not all πj are equal (where j=A,B, C) This is the correct answer. Part 3 Compute χ2STAT. χ2STAT= (Round to three decimal places as needed.)
- Use the contingency table to the right to complete parts (a) through (c) below. A B Total 1 55 15 70 2 15 40 55 Total 70 55 125 Question content area bottom Part 1 a. Find the expected frequency for each cell. A B Total 1 enter your response here enter your response here 70 2 enter your response here enter your response here 55 Total 70 55 125 (Type integers or decimals.) Part 2 b. Compare the observed and expected frequencies for each cell. Choose the correct answer below. A. The totals for the observed and expected frequencies are the same. B. The expected values are always greater than the observed values. C. The observed values are always greater than the expected values. D. The totals for the observed values are always greater than the totals for the expected values. Part 3. Compute χ2STAT.Is it significant at α=0.025? First let π Subscript 1 be the…A random sample of 76 statistics students were asked about their latest test score (pass or failand whether they studied for the test or not. The following contingency table gives the two-way classification of their responses .Amie Jackson, a manager at Sigma travel services, makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process. The travel website is open for reservations 24 hours a day, and Amie regularly checks the website for the waiting time to maintain consistency in service. She uses the following independently drawn samples of wait time during two peak hours, morning 8 a.m. to 10 a.m. and evening 7 p.m. to 9 p.m., for the analysis. Assume that wait times are normally distributed. Wait Time (in seconds) Morning hours 8 a.m. to 10 a.m. 97 101 115 107 129 98 96 132 118 104 123 128 95 127 112 Evening hours 7 p.m. to 9 p.m. 95 92 89 90 102 96 85 81 84 100 97 80 98 79 99 At the 10% significance level, which of the following is the correct conclusion? Do not reject H0. We conclude that the variance of wait time during morning peak hours differs from that during the evening peak hours. Reject H0. We…
- Amie Jackson, a manager at Sigma travel services, makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process. The travel website is open for reservations 24 hours a day, and Amie regularly checks the website for the waiting time to maintain consistency in service. She uses the following independently drawn samples of wait time during two peak hours, morning 8 a.m. to 10 a.m. and evening 7 p.m. to 9 p.m., for the analysis. Assume that wait times are normally distributed. Wait Time (in seconds) Morning hours 8 a.m. to 10 a.m. 97 101 115 107 129 98 96 132 118 104 123 128 95 127 112 Evening hours 7 p.m. to 9 p.m. 95 92 89 90 102 96 85 81 84 100 97 80 98 79 99 A 90% confidence interval is found to be [1.19, 7.36], where the morning is the first group and the evening is the second group. Which of the following is the correct conclusion? Multiple Choice We can conclude the…With effect size and power given, what is our n value(# of new enrollees)?A lecturer at WIN wanted to know if he can predict student’s quiz results by asking them tocomplete a simple survey. The result of the survey is found in the file: Assignment 2 sem22020data set 1. Quiz Results EQR Study Hrs Age Sex BBT MB MC AuHS LM 15 10 3 19 0 0 1 1 0 1 14 15 4 24 0 0 1 0 0 1 9 15 1 20 0 10 1 0 0 1 6 10 3 21 0 0 1 1 0 1 14 15 4 21 0 9 1 0 0 1 12 10 6 21 0 2 0 1 0 1 12 13 2 21 1 8 1 0 0 0 15 15 0 20 0 8 1 0 0 1 12 15 3 20 0 10 1 0 0 1 13 15 0.2 19 0 8 1 0 0 1 15 15 2 20 0 6 1 0 1 1 12 14 5 20 0 5 1 1 1 1 14 15 7 22 0 8 0 0 0 0 7 7 10 21 1 7 0 0 1 0 11 15 5 24 0 0 1 0 0 1 10 10 3 22 1 0 1 0 0 1 13 11 3 23 1 1 1 1 1 1 13 15 2 22 1 8 0 0 0 0 13 12 4 20 1 7 1 0 1 0 13 10 3 20 1 0 1 0 0 1 8 13 5 20 1 8 0 0 0 0 12 13 5 22 0 5 0 0 0 1 13 15 8 22 0 5 0 1 0 1 10 13 4 23 1 7 1 0 0 1 13 13 0.5 20 1 0 0 0 0 0 12 13 0.5 20 1 0 1 0 0 0 15 15 2 21 0 10 1 0 0 1 10 13 6 22 0 6 1 1 0 1 11 8 5 20 0 10 0 0 1 0 12 10 4 19 1…
- Based on a Pitney Bowes survey, assume that 42% of consumers are comfortable having dronesdeliver their purchases. Five consumers are randomly selected from the population that wassurveyed. d) Use the range rule of thumb to determine if 4 of the 5 consumers being comfortable withdrone deliveries is significantly high.The human resource manager at a car dealership wants to know if the ages of its employees are related to the department that they work in. Data was compiled and tabulated in a 2-way contingency table. The employees were classified according to their age and department. d) What is the assumption on which these calculations are based? e) What is relevance of the statement” No cells with expected counts less than 5.”f) Do the records suggest a relationship or independence between age anddepartment for the employees of this car dealership at the 5% significance level? Give reason(s) for your answer.A teacher from the College of Business Administration of Pacific University is using the Test-Retest Method to check the reliability of her examination. She administered the exam to his students during the 1st week of the semester. After 4 weeks of using an online teaching modality, she again administered the same exam. The achievement test results of 10 randomly selected students were tallied, as shown below. Scores Scores Student 1st Test 2nd Test 1 75 79 2 80 81 3 81 80 4 79 82 5 75 78 6 76 75 7 88 86 8 86 90 9 82 85 10 84 87 The coefficient of reliability of her examination will be determined after she measures the degree of relationship of the 1st and 2nd tests, using the Spearman Rank-Order Correlation Coefficient, rho, rs. What is the reliability of her examination? Show your complete solution. How reliable is her examination?
