Given a frequency distribution of 10,000 scores which has a mean of 120 and a standard...
Given a frequency distribution of 10,000 scores which has a mean of 120 and a standard deviation of 15, 94.13% of those tested scored 135 or below.
T or F
The highway department conducted a study measuring driving speeds on a local section of the interstate highway. They found an average speed of mu=58 miles per hour with a standard deviation of 10. Given this information, what proportion of the cards are traveling between 55 and 65 miles per hour?
a .2580 or 25.80%
b .3759 or 37.59%
c .1179 or 11.79%
d none of these answers are correct
Given a frequency distribution of 10,000 scores, which approximates the normal curve and has a mean of 120 and a standard deviation of 15, what percentage of those tested scored 135 or below?
a.22%
b.84.13%
c.94%
d.15.87%
Homework Answers
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Given a frequency distribution of 10,000 scores which has a mean
of 120 and a standard...
Given a frequency distribution of 10,000 scores, which approximates the normal curve and has a mean...
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Use the normal distribution of IQ scores, which has a mean of 125 and a standard...
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Use the normal distribution of IQ scores, which has a mean of 125 and a standard deviation of 13, and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity. :: Click the icon to view the table. %. Percentage of scores greater than 99 is (Round to two decimal places as needed.) i Data Table Standard Scores and Percentiles for a Normal Distribution Full data set e Standard score % Standard...
Use the normal distribution of IQ scores, which has a mean of 105 and a standard deviation of 17, and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity. Click the icon to view the table. Percentage of scores less than 139 is %. (Round to two decimal places as needed.)
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