Do students perform the same when they take an exam alone as when they take an exam in a classroomsetting? Eight students were given two tests of equal difficulty. They took one test in a solitary room andthey took the other in a room filled with other students. The results are shown below.Exam ScoresAlone75 81 78 80 || 74 || 84 84 89Classroom 82 | 83 || 84 7784 91 93 99Assume a Normal distribution. What can be concluded at the the a 0.10 level of significance level ofsignificance?For this study, we should use Select an answera. The null and alternative hypotheses would be:Ho:HA Select an answerSelect an answer vSelect an answer V(please enter a decimal)H Select an answerSelect an answer YSelect an answer V (Please enter a decimal)b. The test statistic 7v(please show your answer to 3 decimal places.)c. The p-value =(Please show your answer to 4 decimal places.)d. The p-value is 2 v ae. Based on this, we should Select an answer v the null hypothesis.f. Thus, the final conclusion is that ...O The results are statistically significant at a = 0.10, so there is sufficient evidence to concludethat the population mean test score taking the exam alone is not the same as the populationmean test score taking the exam in a classroom setting.O The results are statistically insignificant at a = 0.10, so there is insufficient evidence toconclude that the population mean test score taking the exam alone is not the same as thepopulation mean test score taking the exam in a classroom setting.O The results are statistically significant at a = 0.10, so there is sufficient evidence to concludethat the eight students scored the same on average taking the exam alone compared to theclassroom setting.The results are statistically insignificant at a = 0.10, so there is statistically significantevidence to conclude that the population mean test score taking the exam alone is equal tothe population mean test score taking the exam in a classroom setting.

Solution As per guidelines we answer the first three subparts only.

Answered: Do students perform the same when they…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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For a normal distribution, the term quartile is similar to the term percentile in interpretation.
What is the normal hypothesis and alternative hypothesis?
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The following data shows the results for 20 students in one of the post graduate unit.42 66 67 71 78 62 61 76 71 6761 64 61 54 83 63 68 69 81 53Based on the information given you are required toi. Compute the mean, median and mode.ii. Compute the first and third quartiles. iii. Compute and interpret the 90th percentile.
2. This is a sample of 10 random seasons in the National Hockey League, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He accomplished this amazing feat while playing in 280 fewer games than Gordie Howe, the previous record holder. Here are the number of games Gretzky played during each season. 45 70 73 73 74 78 79 80 80 82 e. What is the shape of the data?f. What is the best measure of center and spread to use for this data set
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Do students perform worse when they take an exam alone than when they take an exam in a classroom setting? Eight students were given two tests of equal difficulty. They took one test in a solitary room and they took the other in a room filled with other students. The results are shown below. Exam Scores Alone 83 77 76 84 83 76 70 76 Classroom 92 73 77 86 86 81 75 81 Assume a Normal distribution. What can be concluded at the the a = significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: H₁: Select an answer ✓ Select an answer ✓ Select an answer ✓ Select an answer ✓ b. The test statistic ? | = c. The p-value = d. The p-value is ? ✓ a e. Based on this, we should f. Thus, the final conclusion is that ... 0.05 level of significance level of Select an answer (please enter a decimal) Select an answer (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) Select an answer…
A z-score of + .35 is equal to or greater than what percentage of cases in a normal distribution a. 13.68% b. 46.32% c. 36.32% d. 63.68%
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A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.5; 2.8; 3.1; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4. 1.Which distribution should you use for this problem? (Enter your answer in the form z or tdf where df is the degrees of freedom.) 2. Construct a 95% confidence interval for the population mean length of time. (i) State the confidence interval. (Round your answers to two decimal places.) ( , ) (iii) Calculate the error bound. (Round your answer to two decimal places.)
Is memory ability before a meal better than after a meal? Ten people were given memory tests before their meal and then again after their meal. The data is shown below. A higher score indicates a better memory ability. Score on the Memory Test Before a Meal 69 58 67 83 67 75 77 78 70 64 After a Meal 66 57 64 83 64 75 75 71 64 76 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer ✓ Select an answer (please enter a decimal) Select an answer ✓ Select an answer ✓ H₁: Select an answer ✓ Select an answer (Please enter a decimal) (please show your answer to 3 decimal places.) b. The test statistic?v= c. The p-value = (Please show your answer to 4 decimal places.)
Is memory ability before a meal worse than after a meal? Ten people were given memory tests before their meal and then again after their meal. The data is shown below. A higher score indicates a better memory ability. Score on the Memory Test Before 68 65 74 67 47 85 56 84 73 72 84 73 72 a Meal After 83 73 88 68 61 80 80 55 84 82 77 a Meal Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer Select an answer Select an answer (please enter a decimal) H₁: Select an answer Select an answer Select an answer (Please enter a decimal) b. The test statistic ? ◊ = your answer to 3 decimal places.) c. The p-value = 4 decimal places.) d. The p-value is ? ✨ a (please show (Please show your answer to

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