For some data: The mean is equal to 13142 and The standard deviation is equal 500. Then, 68 percent of the date are between. a. None of answers is correct O b. 13142 and 500 Oc. O and 13142 d. 13642 and 12642

For some data: The mean is equal to 13142 and The standard deviation is equal 500. Then, 68 percent of the date are between. a. None of answers is correct O b. 13142 and 500 Oc. O and 13142 d. 13642 and 12642

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

100%

For some data:
The mean is equal to 13142
and
The standard deviation is equal 500.
Then, 68 percent of the date are between.
a.
None of answers is correct
O b. 13142 and 500
Oc.
O and 13142
d. 13642 and 12642

Expert Solution

Step 1

We can use 68-95-99.7% rule to find out the range that we need.

The first part of the empirical rule states that 68% of the data values will fall within 1 standard deviation of the mean.

To calculate "within 1 standard deviation," we need to subtract 1 standard deviation from the mean, then add 1 standard deviation to the mean. That will give us the range for 68% of the data values.

i.e

13142-500=12642

13142+500=13642

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