CLASS ACTIVITY & REFLECTION (10%)1. A repeated-measures has been conducted to identify the effect of an employee motivationworkshop by measuring the level of motivation among 10 participants before and afterthe workshop. The total scores from participants are shown in the table below.Based on the data above;ParticipantsBeforeAfterDD-Mp (D-MD)²00A44484B3240C4345D3335E2940F30G42H4013435J3336a) Carry out the steps of hypothesis testing for a paired sample t-test with 0.05 levelof significance at two-tailed. Explain your finding.Step 1:Step 2:Step 3:Step 4:Step 5:b) Compute the effect size of the workshop.364243

Participants Before After A 44 48 B 32 40 C 43 45 D 33 35 E 29 40 F 30 36 G 42 42 H…

Answered: CLASS ACTIVITY & REFLECTION (10%) 1. A…

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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Auditors make assessments on the basis of their individual experience, the experience of others, or a combination of experiences. A study of the auditors’ methods was performed. The average number of errors is recorded. At a=0.10, test the claim that errors are equal. Individual Experience Experience of Others Combination 19.9 18.4 21.1 19.1 19.6 18.3 23.3 15.4 21.3 19.3 21.5 23.8 20.1 17.4 23.4 19.7 23.1 17.2 23.4 17.6 20.1 17.3 20.3 20.4 22.3 20.1 20.7 21.0 18.4 17.4 19.5 19.9 23.6 20.0 22.1 19.1 20.1 20.6 24.9 17.8 17.7 21.5 19.2 22.0 17.5 18.3 19.6 24.4 20.2 20.5 20.8 19.7 26.2 20.2 22.7 21.7
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Using the t-table: If you have 8 df and your test statistic is -2.5, how much is in the left-tail? Group of answer choices left-tail is between .1 and .05 left-tail is between .05 and .025 left-tail is between .025 and .01 left-tail is between .01 and .005
R %24 FE %#3 %24 Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 374 of the 522 randomly selected wildfires looked at in the south were caused by humans while 390 of the 563 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: :0H H1: Select an answer Select an answer Select an answer (please enter a decimal) Select an answer Select an answer Select an answer (Please enter a decimal) c. The test statistic ? O (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? e a f. Based on this, we should elect an answer the null hypothesis. g. Thus, the final conclusion is that O The results are statistically insignificant at a = 0.01, so there is statistically…
R3.23. Tips In restaurants, servers rely on tips as a major source of income. Does serving candy after the meal produce larger tips? To find out, two waiters determined randomly whether or not to give candy to 92 dining parties. They recorded the sizes of the tips and reported that guests getting candy tipped an average of 17.8% of the bill, compared with an average tip of only 15.1% from those who got no candy. ("Sweetening the Till: The Use of Candy to Increase Restaurant Tipping," Journal of Applied Social Psychology 32, no. 2 [2002]: 300-309) a) Was this an experiment or an observational study? Explain. b) Is it reasonable to conclude that the candy caused guests to tip more? Explain. c) The researchers said the difference was statistically sig- nificant. Explain in this context what that means.
Researchers watched groups of dolphins to determine what activities the dolphins partake in at certain times of the day. The numbers in the table represent the number of groups of dolphins that were partaking in an activity at certain times of days. Is there enough evidence to show that the activity and the time period are dependent for dolphins? Test at the 5% level. Dolphin Activity Period Activity Morning Noon Afternoon Evening Total Travel 19 13 14 15 61 Feed 20 14 54 118 Social 15 13 52 109 Total 78 48 41 121 288 State the hypotheses. Ho: Activity and the time period are Select an answer Ha: Activity and the time period are Select an answer Calculate the test statistic. Round your answer to three decimal places. x² = Calculate the p-value. Round your answer to four decimal places. p-value= State your decision. Since p-value? 0.05, Select an answer Ho. Interpret your decision in the context of the problem. At the 5% level of significance, there Select an answer enough evidence to…
Task: A company's trainees are randomly assigned to groups which are taught a period they are tested for inspection performance quality. The following are their scores. Method A: 80, 83, 79, 85, 90, 68 Method B: 82, 84, 60, 72, 86, 67, 91 Method C: 93, 65, 77, 78, 88. Use the H test to determine at the 0.05 level of significance whether the three methods are equally effective.
Oxygen consumption was measured in twelve individuals while they sat with their eyes closed listening to an exciting adventure story read by Taylor Swift or a restful instrumental medley performed by Metallica. Based on the results shown, is oxygen consumption less when listening to the music? Story Music 6.1 5.4 7.2 6.7 5.7 5.4 6.4 4.2 5.8 4.0 6.2 4.1
Q22
Carmen and Rosanna are two employees in an electronics store. The store manager has put an emphasis on increasing the number of applications for the store credit card. The manager randomly selected 24 weeks for each employee and recorded the number of completed applications for each week, which is provided in the samples below. Each employee completed 21 applications in one of the weeks selected. Use Excel to calculate each employee's z-score for completing 21 applications. Round your answers to two decimal places. Carmen Rosanna11 56 1115 613 185 1114 1416 521 208 1110 97 1416 1513 1310 619 2118 95 1817 310 126 1712 1214 419 1017 8
R1
HOW Do I solve this in EXCEL In 2016, the Better Business Bureau (BBB) settled 80% of complaints they received in the US. Suppose you have been hired by the BBB to investigate the complains they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the BBB is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.8, the same as the overall proportion of complaints settled in 2016. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of pbar. Based on a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion? Suppose you select a sample of 450 complaints involving new car dealers. Show the sampling distribution of pbar. Based on the smaller sample of only 450 complaints, what is the probability that the sample proportion will be within…

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