The Practice of Statistics for AP - 4th Edition
The Practice of Statistics for AP - 4th Edition
4th Edition
ISBN: 9781429245593
Author: Starnes, Daren S., Yates, Daniel S., Moore, David S.
Publisher: Macmillan Higher Education
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Question
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Chapter 10.2, Problem 46E

a.

To determine

To explain: Whether the two-sample procedure could be used here or not.

a.

Expert Solution
Check Mark

Answer to Problem 46E

Yes.

Explanation of Solution

Given:

  Groupnx¯sxAnglo926.370.60Hispanic865.910.93

Formula used:

The formula to compute the confidence interval is:

  (x¯1x¯2)±tα/2,df×s12n1+s22n2

Here, it is given that the sample sizes are 92 and 86 respectively which are above the required sample size of 30 which implies that the distribution is normally distributed. Thus, the two-sample procedure could be used here

b.

To determine

To find: The 90% confidence interval for the difference between the mean ratings and interpret it.

b.

Expert Solution
Check Mark

Answer to Problem 46E

The confidence interval is (413.62, 634.64).

Explanation of Solution

Calculation:

The 95% confidence interval for the difference between the mean ratings using Ti-83 calculator can be calculated as:

  The Practice of Statistics for AP - 4th Edition, Chapter 10.2, Problem 46E

Thus, the confidence interval is (0.2264, 0.6936).

Interpretation:

There is 95% probability that the mean difference between the ratings is between $413.62 and $634.64.

c.

To determine

To interpret: The confidence interval computed in above part.

c.

Expert Solution
Check Mark

Explanation of Solution

The confidence interval shows that on an average 95% of the samples have confidence interval that are containing the mean difference of the ratings of the reliability for Hispanic and Anglo customers of bank.

Chapter 10 Solutions

The Practice of Statistics for AP - 4th Edition

Ch. 10.1 - Prob. 4ECh. 10.1 - Prob. 5ECh. 10.1 - Prob. 6ECh. 10.1 - Prob. 7ECh. 10.1 - Prob. 8ECh. 10.1 - Prob. 9ECh. 10.1 - Prob. 10ECh. 10.1 - Prob. 11ECh. 10.1 - Prob. 12ECh. 10.1 - Prob. 13ECh. 10.1 - Prob. 14ECh. 10.1 - Prob. 15ECh. 10.1 - Prob. 16ECh. 10.1 - Prob. 17ECh. 10.1 - Prob. 18ECh. 10.1 - Prob. 19ECh. 10.1 - Prob. 20ECh. 10.1 - Prob. 21ECh. 10.1 - Prob. 22ECh. 10.1 - Prob. 23ECh. 10.1 - Prob. 24ECh. 10.1 - Prob. 25ECh. 10.1 - Prob. 26ECh. 10.1 - Prob. 27ECh. 10.1 - Prob. 28ECh. 10.1 - Prob. 29ECh. 10.1 - Prob. 30ECh. 10.1 - Prob. 31ECh. 10.1 - Prob. 32ECh. 10.1 - Prob. 33ECh. 10.1 - Prob. 34ECh. 10.2 - Prob. 1.1CYUCh. 10.2 - Prob. 1.2CYUCh. 10.2 - Prob. 1.3CYUCh. 10.2 - Prob. 1.4CYUCh. 10.2 - Prob. 2.1CYUCh. 10.2 - Prob. 3.1CYUCh. 10.2 - Prob. 35ECh. 10.2 - Prob. 36ECh. 10.2 - Prob. 37ECh. 10.2 - Prob. 38ECh. 10.2 - Prob. 39ECh. 10.2 - Prob. 40ECh. 10.2 - Prob. 41ECh. 10.2 - Prob. 42ECh. 10.2 - Prob. 43ECh. 10.2 - Prob. 44ECh. 10.2 - Prob. 45ECh. 10.2 - Prob. 46ECh. 10.2 - Prob. 47ECh. 10.2 - Prob. 48ECh. 10.2 - Prob. 49ECh. 10.2 - Prob. 50ECh. 10.2 - Prob. 51ECh. 10.2 - Prob. 52ECh. 10.2 - Prob. 53ECh. 10.2 - Prob. 54ECh. 10.2 - Prob. 55ECh. 10.2 - Prob. 56ECh. 10.2 - Prob. 57ECh. 10.2 - Prob. 58ECh. 10.2 - Prob. 59ECh. 10.2 - Prob. 60ECh. 10.2 - Prob. 61ECh. 10.2 - Prob. 62ECh. 10.2 - Prob. 63ECh. 10.2 - Prob. 64ECh. 10.2 - Prob. 65ECh. 10.2 - Prob. 66ECh. 10.2 - Prob. 67ECh. 10.2 - Prob. 68ECh. 10.2 - Prob. 69ECh. 10.2 - Prob. 70ECh. 10.2 - Prob. 71ECh. 10.2 - Prob. 72ECh. 10.2 - Prob. 73ECh. 10.2 - Prob. 74ECh. 10.2 - Prob. 75ECh. 10.2 - Prob. 76ECh. 10 - Prob. 1CRECh. 10 - Prob. 2CRECh. 10 - Prob. 3CRECh. 10 - Prob. 4CRECh. 10 - Prob. 5CRECh. 10 - Prob. 6CRECh. 10 - Prob. 7CRECh. 10 - Prob. 8CRECh. 10 - Prob. 9CRECh. 10 - Prob. 10CRECh. 10 - Prob. 1PTCh. 10 - Prob. 2PTCh. 10 - Prob. 3PTCh. 10 - Prob. 4PTCh. 10 - Prob. 5PTCh. 10 - Prob. 6PTCh. 10 - Prob. 7PTCh. 10 - Prob. 8PTCh. 10 - Prob. 9PTCh. 10 - Prob. 10PTCh. 10 - Prob. 11PTCh. 10 - Prob. 12PTCh. 10 - Prob. 13PTCh. 10 - Prob. 1PT3Ch. 10 - Prob. 2PT3Ch. 10 - Prob. 3PT3Ch. 10 - Prob. 4PT3Ch. 10 - Prob. 5PT3Ch. 10 - Prob. 6PT3Ch. 10 - Prob. 7PT3Ch. 10 - Prob. 8PT3Ch. 10 - Prob. 9PT3Ch. 10 - Prob. 10PT3Ch. 10 - Prob. 11PT3Ch. 10 - Prob. 12PT3Ch. 10 - Prob. 13PT3Ch. 10 - Prob. 14PT3Ch. 10 - Prob. 15PT3Ch. 10 - Prob. 16PT3Ch. 10 - Prob. 17PT3Ch. 10 - Prob. 18PT3Ch. 10 - Prob. 19PT3Ch. 10 - Prob. 20PT3Ch. 10 - Prob. 21PT3Ch. 10 - Prob. 22PT3Ch. 10 - Prob. 23PT3Ch. 10 - Prob. 24PT3Ch. 10 - Prob. 25PT3Ch. 10 - Prob. 26PT3Ch. 10 - Prob. 27PT3Ch. 10 - Prob. 28PT3Ch. 10 - Prob. 29PT3Ch. 10 - Prob. 30PT3Ch. 10 - Prob. 31PT3Ch. 10 - Prob. 32PT3Ch. 10 - Prob. 33PT3Ch. 10 - Prob. 34PT3Ch. 10 - Prob. 35PT3
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