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QuickNormalQuiz
Közreműködött: Lange
(Eredeti szerző: Lehnert)

Suppose that the BAC of male students at a particular college

who drink 5 beers varies from student to student according to a

normal distribution with mean 0.08 and standard deviation 0.01.

 

Draw a normal curve and answer the following question.

The middle 95% of students who drink 5 beers have

BAC between:

 0.07 and 0.09

0.06 and 0.10

0.05 and 0.11

.04 and 0.12

Suppose that the BAC of male students at a particular college

who drink 5 beers varies from student to student according to a

normal distribution with mean 0.08 and standard deviation 0.01.

 

Draw a normal curve and answer the following question.

What percent of students who drink 5 beers have BAC

above 0.10 (the legal limit for driving in some states)?

2.5%

5%

 16%

32%

The mean is 80 and the standard deviation is 10. What is the

standard score for an observation of 90?

90

0

10

1.0
A normal distribution always:

is skewed to the right

 is skewed to the left

is symmetric

has more than one peak

If your score on a test is at the 60th percentile, you know that

your score lies:

below the first quartile.

between the first quartile and the median.

 between the median and the third quartile.

Can't say where it lies relative to the quartiles.

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