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# TEXTBOX I [ . [I E F H L Branch 1 Branch ?

Assuming that the population variances from both branches are equal, is there evidence of a significant difference in the mean waiting time between the two branches? Use alpha = 0.01.

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TEXTBOX I
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Branch 1
Branch ?
A bank with a branch [ Branch Y ; located in a commercial district of a city has developed an improved
process for serving customers during the noon - to - 1 p.m . lunch period . The waiting time [operationally*
4. 21
9. 56
defined as the time ElapsEd from when the customer Enters the line until he or she reaches the teller*
5.55
5. 90
window ; needs to be shortened to increase customer satisfaction . A random sample of 15 customers is
Selected and the results (in minutes ) are shown in the table on the left . In addition , suppose that
3.02
8. 02
another branch [ Branch ? ), located in a residential area , is also concerned with the noon - to - 1 p.m .
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lunch period . A random sample of 15 customers is Selected and the results are shown in the table on
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5. 79
the left. Assuming that the population variances from both branches are Equal , is there evidence of a
significant difference in the mean waiting time between the two branches ? Use alpha = 10.01 .
E.
4. 77
8. 73
2. 34
3. 82
Solve this question using EXCEL . State the null &amp; alternative hypotheses clearly . Interpret the EXCEL
output and state your conclusion clearly . Provide all your results and comments on this sheet .
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8. 01
Specifically , type in Your answers in the spaces provided below .`
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8. 35
4. 50
10. 49
Are the samples related [i.E . dependent ; or independent ?&quot;
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5. 10
5. 58
0. 38
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Null Hypothesis
1:3
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4. 08
14
5. 46
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Alternative Hypothesis`
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9.91
3. 79
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Interpretation of EXCEL output ! Conclusion of Hypothesis test !`
GroceryPrices
Wait Times
(* )

Samples are independent as two branch are in different location with different customers. null hypothesis... View the full answer

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