Standard Deviation

Question 1

A coin is tossed two times. The set of outcomes is given as S = {HH, HT, TH, TT}. Let X represent the number of times heads occurs. Complete the table. a =

Revolt · Accepted Answer

0.25

Question 2

b =

Revolt · Accepted Answer

0.5

Question 3

c =

Revolt · Accepted Answer

0.25

Question 4

In a survey, 100 people were asked how many car accidents they had in the past year. The estimated probability distribution for the number of accidents is shown in the table. Using the data from the table, what is the probability of having exactly 1 accident in a year?

Revolt · Accepted Answer

0.080

Question 5

What type of data distribution is shown on the graph?

Revolt · Accepted Answer

negatively skewed

Question 6

The probability of having less than 3 accidents in a year is .

Revolt · Accepted Answer

0.995

Question 7

Approximately, what is the probability of getting 4, 5, or 6 heads?

Revolt · Accepted Answer

65%

Question 8

The mean is .

Revolt · Accepted Answer

less than the median

Question 9

The mode is

Revolt · Accepted Answer

greater than the median

Standard Deviation Answers

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