Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 16. Use the empirical rule to determine the following. ​(a) What percentage of people has an IQ score between 68 and 132​? ​(b) What percentage of people has an IQ score less than 84 or greater than 116​? ​(c) What percentage of people has an IQ score greater than 148​?

MATLAB: An Introduction with Applications
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Scores of an IQ test have a​ bell-shaped distribution with a mean of
100
and a standard deviation of
16.
Use the empirical rule to determine the following.
​(a) What percentage of people has an IQ score between
68
and
132​?
​(b) What percentage of people has an IQ score less than
84
or greater than
116​?
​(c) What percentage of people has an IQ score greater than
148​?
also the 2 other questions thanks so for advances 
 
 
 
Find the sample variance and standard deviation.
6, 47, 14, 48, 32, 26, 29, 27, 26, 32
Choose the correct answer below. Fill in the answer box to complete your choice.
(Round to two decimal places as needed.)
OA. ²:
=
OB. ²
Transcribed Image Text:Find the sample variance and standard deviation. 6, 47, 14, 48, 32, 26, 29, 27, 26, 32 Choose the correct answer below. Fill in the answer box to complete your choice. (Round to two decimal places as needed.) OA. ²: = OB. ²
An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four
crashes was $411, $470, $413, $230. Compute the range, sample variance, and sample standard deviation cost of
repair.
The range is $
Transcribed Image Text:An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was $411, $470, $413, $230. Compute the range, sample variance, and sample standard deviation cost of repair. The range is $
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