PRACTICE OF STATISTICS F/AP EXAM
PRACTICE OF STATISTICS F/AP EXAM
6th Edition
ISBN: 9781319113339
Author: Starnes
Publisher: MAC HIGHER
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Question
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Chapter 8, Problem T8.11SPT

a)

To determine

To construct: The 99% confidence interval for the proportion of visitors who are favor of restrictions and interpret it.

a)

Expert Solution
Check Mark

Answer to Problem T8.11SPT

The confidence interval is (0.485, 0.696)

Explanation of Solution

Given:

Number of trials ( n ) = 150

Number of events ( x ) = 89

Formula used:

The formula to compute the confidence interval for population proportion is:

  CI=p^±zα/2×p^(1p^)n

Calculation:

The obtained Minitab output is:

  PRACTICE OF STATISTICS F/AP EXAM, Chapter 8, Problem T8.11SPT

Interpretation:

There is 99% probability that the proportion of visitors who are favor of restrictions lies between 0.485 and 0.696.

b)

To determine

To explain: Whether using the above part, it could be concluded that more than half of visitors are favor of restriction.

b)

Expert Solution
Check Mark

Answer to Problem T8.11SPT

Yes.

Explanation of Solution

The confidence interval computed in above part lies between 0.485 and 0.696. Since, it contains the value (0.50) and upper limit of the confidence interval is higher than 0.50. Thus, it could be concluded that more than half of visitors are favor of restriction.

Chapter 8 Solutions

PRACTICE OF STATISTICS F/AP EXAM

Ch. 8.1 - Prob. 11ECh. 8.1 - Prob. 12ECh. 8.1 - Prob. 13ECh. 8.1 - Prob. 14ECh. 8.1 - Prob. 15ECh. 8.1 - Prob. 16ECh. 8.1 - Prob. 17ECh. 8.1 - Prob. 18ECh. 8.1 - Prob. 19ECh. 8.1 - Prob. 20ECh. 8.1 - Prob. 21ECh. 8.1 - Prob. 22ECh. 8.1 - Prob. 23ECh. 8.1 - Prob. 24ECh. 8.1 - Prob. 25ECh. 8.1 - Prob. 26ECh. 8.1 - Prob. 27ECh. 8.1 - Prob. 28ECh. 8.2 - Prob. 29ECh. 8.2 - Prob. 30ECh. 8.2 - Prob. 31ECh. 8.2 - Prob. 32ECh. 8.2 - Prob. 33ECh. 8.2 - Prob. 34ECh. 8.2 - Prob. 35ECh. 8.2 - Prob. 36ECh. 8.2 - Prob. 37ECh. 8.2 - Prob. 38ECh. 8.2 - Prob. 39ECh. 8.2 - Prob. 40ECh. 8.2 - Prob. 41ECh. 8.2 - Prob. 42ECh. 8.2 - Prob. 43ECh. 8.2 - Prob. 44ECh. 8.2 - Prob. 45ECh. 8.2 - Prob. 46ECh. 8.2 - Prob. 47ECh. 8.2 - Prob. 48ECh. 8.2 - Prob. 49ECh. 8.2 - Prob. 50ECh. 8.2 - Prob. 51ECh. 8.2 - Prob. 52ECh. 8.2 - Prob. 53ECh. 8.2 - Prob. 54ECh. 8.2 - Prob. 55ECh. 8.2 - Prob. 56ECh. 8.2 - Prob. 57ECh. 8.2 - Prob. 58ECh. 8.2 - Prob. 59ECh. 8.2 - Prob. 60ECh. 8.3 - Prob. 61ECh. 8.3 - Prob. 62ECh. 8.3 - Prob. 63ECh. 8.3 - Prob. 64ECh. 8.3 - Prob. 65ECh. 8.3 - Prob. 66ECh. 8.3 - Prob. 67ECh. 8.3 - Prob. 68ECh. 8.3 - Prob. 69ECh. 8.3 - Prob. 70ECh. 8.3 - Prob. 71ECh. 8.3 - Prob. 72ECh. 8.3 - Prob. 73ECh. 8.3 - Prob. 74ECh. 8.3 - Prob. 75ECh. 8.3 - Prob. 76ECh. 8.3 - Prob. 77ECh. 8.3 - Prob. 78ECh. 8.3 - Prob. 79ECh. 8.3 - Prob. 80ECh. 8.3 - Prob. 81ECh. 8.3 - Prob. 82ECh. 8.3 - Prob. 83ECh. 8.3 - Prob. 84ECh. 8.3 - Prob. 85ECh. 8.3 - Prob. 86ECh. 8 - Prob. R8.1RECh. 8 - Prob. R8.2RECh. 8 - Prob. R8.3RECh. 8 - Prob. R8.4RECh. 8 - Prob. R8.5RECh. 8 - Prob. R8.6RECh. 8 - Prob. R8.7RECh. 8 - Prob. R8.8RECh. 8 - Prob. R8.9RECh. 8 - Prob. T8.1SPTCh. 8 - Prob. T8.2SPTCh. 8 - Prob. T8.3SPTCh. 8 - Prob. T8.4SPTCh. 8 - Prob. T8.5SPTCh. 8 - Prob. T8.6SPTCh. 8 - Prob. T8.7SPTCh. 8 - Prob. T8.8SPTCh. 8 - Prob. T8.9SPTCh. 8 - Prob. T8.10SPTCh. 8 - Prob. T8.11SPTCh. 8 - Prob. T8.12SPTCh. 8 - Prob. T8.13SPT
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