# Probability

posted by
**Jon**
.

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