3 and Excel Ex. Take Teat: BANA 3363 Online Assi (O The researchers can be 95% c
ID: 3369035 • Letter: 3
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3 and Excel Ex. Take Teat: BANA 3363 Online Assi (O The researchers can be 95% confident that ne rue dmerence n man aicohol aos between-ter, he muse between $18.40 and $20.83. They can conclude that alcohal sales are higher on average when fast music is piayed than when slow music is QUESTION 4 Some people claim that women are better able to 'muititasi Ge, work on a number of different tasks at the same researchor decides to investigate this claim. A sample of 10 men and 10 women woro anked to perform a set of tasks, and their parfomance was rated on a an average score of 74.7, with a standard deviation of 8.3 and men (Group 2) population standard deviations are not equal (Case 2), find the lower bound of a 95% confidence two decimal places Take all calculations toward the answer to three (3) decimal plsces, places, and use this website to caloulate the degrees of froedom, vw: httpl/lweb.utk.edu 0-100 scale. Wemen (Group 1) anded up with had an average score of 63.9 with a standard deviation of 5.2. Assuming the . Take al cal ulations toward the answer to three interval for the true difererce n moan performace, to decinal QUESTION S Some people olaim that women are beter able to is, work on a number of difHferant tasiks at the same time) at work than men, on average A researcher decides to investigate this claim. A sample of 151 men and 151 women wore asked to devotions are NOT oqual (Case Tako al odoulations perform a set of tasks, and their pertomance was rahed on a 0-100 scale. Women (Group 1) anded up with a standard deviation of 74 and men (Group 2) had an average score of 61.7 with a standard deviation of 8.3. Fnd te . "0% confidence interval to the tra at erencen mean performaroe?totwo deana dan toward the answer to thvree (3 decimal places, and use this website to caleulate the degrees answer to QUESTION 6 we were intonested in testing whether there was anydinenoe at all between two pepulation means which of the tolowing would be the appropriete null hypothesis? QUESTION 7 he typical player te A sample Group 11 ot 10 typical players took an average of 5 5 hours to complete the game on "Han, wh a standdExplanation / Answer
4)
t value at 95% = 2.3060
CI = ( x1 -x2) - t * sqrt(s1^2/n1 + s2^2/n2)
= ( 74.7 - 63.9) - 2.3060 * sqrt(8.3^2/10 + 5.2^2/10)
= 3.658
5)
t value at 95% = 1.9760
CI = ( x1 -x2) + t * sqrt(s1^2/n1 + s2^2/n2)
= ( 69.9 - 61.7) + 1.9760 * sqrt(7.4^2/151+ 8.3^2/151)
= 9.988
6)
H0 : mu1 - mu2 = 0
7)
t = ( x1 - x2)/sqrt(s1^2/n1 + s2^2/n2)
= (5.5 - 3.6)/sqrt(1.2^2/10 + 1.2^2/15)
= 3.878
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