Statistics- Unlocking The Power Of Data
Statistics- Unlocking The Power Of Data
2nd Edition
ISBN: 9781119308843
Author: Lock
Publisher: WILEY
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Chapter 3.4, Problem 104E

a.

To determine

Identify the percent of values that must be chopped off from each tail for the confidence interval of 95%.

a.

Expert Solution
Check Mark

Answer to Problem 104E

The percent of values that must be chopped off from each tail is 2.5%.

Explanation of Solution

In a 95% confidence interval, 95% of observation will be considered as the middle values and the remaining 5% of values has to be chopped off from both sides of the tail. Thus, from each tail, 2.5%(=5%2) of values has to be chopped off.

b.

To determine

Identify the percent of values that must be chopped off from each tail for the confidence interval of 90%.

b.

Expert Solution
Check Mark

Answer to Problem 104E

The percent of values that must be chopped off from each tail is 5%.

Explanation of Solution

In a 90% confidence interval, 90% of observation will be considered as the middle values and the remaining 10% of values has to be chopped off from both sides of the tail. Thus, from each tail, 5%(=10%2) of values has to be chopped off.

c.

To determine

Identify the percent of values that must be chopped off from each tail for the confidence interval of 98%.

c.

Expert Solution
Check Mark

Answer to Problem 104E

The percent of values that must be chopped off from each tail is 1%.

Explanation of Solution

In a 98% confidence interval, 98% of observation will be considered as the middle values and the remaining 2% of values has to be chopped off from both sides of the tail. Thus, from each tail, 1%(=2%2) of values has to be chopped off.

d.

To determine

Identify the percent of values that must be chopped off from each tail for the confidence interval of 99%.

d.

Expert Solution
Check Mark

Answer to Problem 104E

The percent of values that must be chopped off from each tail is 0.5%.

Explanation of Solution

In a 99% confidence interval, the 99% of observation will be considered as the middle values and the remaining 1% of values has to be chopped off from both sides of the tail. Thus, from each tail, 0.5%(=1%2) of values has to be chopped off.

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Chapter 3 Solutions

Statistics- Unlocking The Power Of Data

Ch. 3.1 - Prob. 11ECh. 3.1 - Prob. 12ECh. 3.1 - Prob. 13ECh. 3.1 - Prob. 14ECh. 3.1 - Prob. 15ECh. 3.1 - Exercises 3.16 to 3.19 refer to the sampling...Ch. 3.1 - Prob. 17ECh. 3.1 - Prob. 18ECh. 3.1 - Prob. 19ECh. 3.1 - Downloading Apps for Your Smartphone A random...Ch. 3.1 - How Many Apps for Your Smartphone? Exercise 3.20...Ch. 3.1 - Socially Conscious Consumers In March 2015, a...Ch. 3.1 - Florida Lakes Florida has over 7700 lakes.12 We...Ch. 3.1 - Topical Painkiller Ointment The use of topical...Ch. 3.1 - Average Household Size The latest US Census lists...Ch. 3.1 - Proportion of US Residents Less than 25 Years Old...Ch. 3.1 - Mix It Up for Better Learning In preparing for a...Ch. 3.1 - What Proportion of Adults and Teens Text Message?...Ch. 3.1 - Hollywood Movies Data 2.7 on page 95 introduces...Ch. 3.1 - Prob. 30ECh. 3.1 - Prob. 31ECh. 3.1 - Prob. 32ECh. 3.1 - Prob. 33ECh. 3.1 - Prob. 34ECh. 3.1 - What Is an Average Budget for a Hollywood Movie?...Ch. 3.1 - College Graduates In Example 3.1 on page 197, we...Ch. 3.1 - Gender in the Rock and Roll Hall of Fame From its...Ch. 3.1 - Prob. 38ECh. 3.1 - Prob. 39ECh. 3.1 - Prob. 40ECh. 3.2 - In Exercises 3.41 to 3.44, data from a sample is...Ch. 3.2 - In Exercises 3.41 to 3.44, data from a sample is...Ch. 3.2 - In Exercises 3.41 to 3.44, data from a sample is...Ch. 3.2 - In Exercises 3.41 to 3.44, data from a sample is...Ch. 3.2 - Prob. 45ECh. 3.2 - In Exercises 3.45 to 3.48, construct an interval...Ch. 3.2 - Prob. 47ECh. 3.2 - Prob. 48ECh. 3.2 - Prob. 49ECh. 3.2 - Prob. 50ECh. 3.2 - Prob. 51ECh. 3.2 - Prob. 52ECh. 3.2 - Prob. 53ECh. 3.2 - In Exercises 3.51 to 3.56, information about a...Ch. 3.2 - Prob. 55ECh. 3.2 - In Exercises 3.51 to 3.56, information about a...Ch. 3.2 - Prob. 57ECh. 3.2 - Prob. 58ECh. 3.2 - Prob. 59ECh. 3.2 - Prob. 60ECh. 3.2 - Prob. 61ECh. 3.2 - Prob. 62ECh. 3.2 - Prob. 63ECh. 3.2 - Prob. 64ECh. 3.2 - Prob. 65ECh. 3.2 - Prob. 66ECh. 3.2 - Prob. 67ECh. 3.2 - Prob. 68ECh. 3.2 - Prob. 69ECh. 3.2 - Prob. 70ECh. 3.2 - Exercises 3.71 to 3.73 consider the question...Ch. 3.2 - Prob. 72ECh. 3.2 - Prob. 73ECh. 3.2 - Prob. 74ECh. 3.3 - In Exercises 3.75 and 3.76, a sample is given....Ch. 3.3 - Prob. 76ECh. 3.3 - Prob. 77ECh. 3.3 - In Exercises 3.77 to 3.80, use the bootstrap...Ch. 3.3 - Prob. 79ECh. 3.3 - Prob. 80ECh. 3.3 - Prob. 81ECh. 3.3 - Prob. 82ECh. 3.3 - Prob. 83ECh. 3.3 - Prob. 84ECh. 3.3 - Prob. 85ECh. 3.3 - Prob. 86ECh. 3.3 - Prob. 87ECh. 3.3 - Prob. 88ECh. 3.3 - Are Female Rats More Compassionate Than Male Rats?...Ch. 3.3 - Prob. 90ECh. 3.3 - Prob. 91ECh. 3.3 - Prob. 92ECh. 3.3 - Prob. 93ECh. 3.3 - Correlation between Price and Depreciation in...Ch. 3.3 - Prob. 95ECh. 3.3 - Exercises 3.96 to 3.101 use data from a study...Ch. 3.3 - Prob. 97ECh. 3.3 - Prob. 98ECh. 3.3 - Prob. 99ECh. 3.3 - Prob. 100ECh. 3.3 - Prob. 101ECh. 3.3 - Prob. 102ECh. 3.3 - Prob. 103ECh. 3.4 - Prob. 104ECh. 3.4 - Prob. 105ECh. 3.4 - Prob. 106ECh. 3.4 - Prob. 107ECh. 3.4 - Prob. 108ECh. 3.4 - Prob. 109ECh. 3.4 - Prob. 110ECh. 3.4 - Prob. 111ECh. 3.4 - Prob. 112ECh. 3.4 - Prob. 113ECh. 3.4 - Prob. 114ECh. 3.4 - Prob. 115ECh. 3.4 - IQ Scores A sample of 10 IQ scores was used to...Ch. 3.4 - Average Penalty Minutes in the NHL In Exercise...Ch. 3.4 - Prob. 118ECh. 3.4 - Prob. 119ECh. 3.4 - Prob. 120ECh. 3.4 - Prob. 121ECh. 3.4 - Prob. 122ECh. 3.4 - Prob. 123ECh. 3.4 - Prob. 124ECh. 3.4 - Prob. 125ECh. 3.4 - Prob. 126ECh. 3.4 - Prob. 127ECh. 3.4 - Prob. 128ECh. 3.4 - Prob. 129ECh. 3.4 - Prob. 130ECh. 3.4 - Prob. 131ECh. 3.4 - Prob. 132ECh. 3.4 - Prob. 133ECh. 3.4 - Prob. 134ECh. 3.4 - Prob. 135E
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