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BMGT6022 Probability Distributions

Authored by Nicholas Tompkins

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BMGT6022 Probability Distributions
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10 questions

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1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the following characteristics do all normal distributions have (in theory)?

symmetrical

area under the curve adds to 1

mean of 0 and standard deviation of 1

mean = median = mode

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which function in Excel is used to calculate the probability less than (or no more than) a particular value in a Normal distribution? Example: what is the probability of a bottle of water being less than 497mL?

=NORM.INV()

=NORM.DIST()

=1-NORM.DIST()

=PROB()

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which function in Excel is used to calculate the probability more than (or no less than) a particular value in a Normal distribution? Example: what is the probability of a bottle of water being more than 503mL?

=NORM.INV()

=NORM.DIST()

=1-NORM.DIST()

=PROB()

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which function in Excel is used to calculate the probability between two values of a Normal distribution? Example: what is the probability of a bottle of water being between 497 and 503mL?

=NORM.INV()

=NORM.DIST()

=NORM.DIST() - NORM.DIST()

=PROB()

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which function in Excel is used to calculate the value for which a specified proportion of the Normal curve is below? Example: 25% of bottles contain less than what volume?

=NORM.INV()

=NORM.DIST()

=NORM.DIST() - NORM.DIST()

=PROB()

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 39% of adult males measure at least 1.8m, then what proportion of adult males are less than 1.8m tall?

39%

50%

61%

82%

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a production run of 500 widgets, how many are likely to weigh less than 30g if the mean weight is 40g and the standard deviation is 2g. To calculate this in Excel:

=NORM.DIST(30,40,2,FALSE)

=NORM.DIST(30,40,2,TRUE)*500

=NORM.DIST(30,40,2,FALSE)*500

=NORM.INV(30,40,2,TRUE)

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