Take a Test-Bukola Akomolede- Google Chrome ure | h = Secure I https://www.mathe

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Take a Test-Bukola Akomolede- Google Chrome ure | h = Secure I https://www.mathel.com/Student/PlayerTest.aspitestid-181926822&centerwinyes; DSIM201 Summer 2018 ADP Bukola Akomolede & 6/7/18 12:22 PM Quiz: QUIZ 10 (2 Sample & Chi Sq) A This Question: 1 pt Time Remaining: 00 44:16 Submt Quiz 4 of5 (0 complete) This Quiz: 5 pts possible All Abo Bank A and Bank B have each developed an improved process for serving customers. The waiting period from the moment a customer enters until he or she reaches the counter needs to be shortened. A random sample of 10 customers is selected from each bank and the results (in minutes) are shown in the accompanying data table. Complete parts (a) through (c). and" (and Di Click the icon to view the table http( One a. Assuming that the population variances from both banks are equal, is there evidence of a diference in the mean waiting time between the two branches? (Use 15c So ?:01) OA. Do not reject Ho. There is insufficient evidence that the means differ Prog?B. ct reject Ho. There is suficient evidence that the means difer. take OD. Reject Ho There is sufficilent evidence that the means differ Reject H0 There is insufficient evidence that the means differ b. Determine the p-value in (a) and interpret its meaning http| A dif p-value = (Round to four decimal places as needed ) Click to select your answerfs) https.//photographylife com Cameras and Lenses v 2010- Why would you pick DSLR vs Point and Shoot Camera or viceversa? shoot market ere to search

Explanation / Answer

(a) right choice is D. Reject H0. There is sufficient evidence that means differe

since p-value is less than alpha=0.1,

(b)p-value=0.0062

right choice is B. it is probability of .............from 0 in either direction..........between Bank A and Bank B.

(c) right choice D.Both sampled population are approximately normal

The P value, or calculated probability, is the probability of finding the observed, or more extreme, results when the null hypothesis (H 0) of a study question is true – the definition of 'extreme' depends on how the hypothesis is being tested.

here we use t-test with null hypothesis H0:mean1=mean2 and alternate hypothesis H1:mean1?mean2

statistic t=(mean1-mean2)/((sp*(1/n1 +1/n2)1/2)=3.1

and sp2=((n1-1)s12+(n2-1)s22)/n and with df is n=n1+n2-2=10+10-2=18

sample mean s s2 n (n-1)s2 A 3.99 1.03 1.0609 10 9.5481 B 6.17 1.97 3.8809 10 34.9281 difference= 2.18 4.9418 20 44.4762 sp2= 2.47 sp= 1.57 t= 3.10 two tailed p-value= 0.0062

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