Probability

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1)A coin is tossed 5 times. Find P(at most 4 tails.)

A)3/16
B)13/16
C)1/32
D)31/32
I chose D

2)How many different arrangements of the letters of the word doodle are possible?

A)180
B)720
C)15
D)90
I chose B

For #3-5, use the following tepereatures from Jan-Dec: 50,48,51,65,77,85,82,82,73,61,53,48

3)Which measure of central tendency is not a good representation of the data?
A)middle
B)median
C)mode
D)mean
I chose A

4)Find the variance of the temperatures.
A)4366.2
B)64.6
C)2342.9
D)195.2
I chose D

5)Find the standard deviation of the temperatures.
A)14.6 degrees Fahrenheit
B)14.0 degrees Fahrenheit
C)63.0 degrees Fahrenheit
D)64.6 degrees Fahrenheit
I chose B

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