The life of Sunshine CD players is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A CD player is guaranteed for 3 years. We are interested in the length of time a CD player lasts. Using the Normal Distribution or Inverse Normal Distribution calculator where appropriate fill in the blanks: http://onlinestatbook.com/2/ calculators/normal_dist.html or http://onlinestatbook.com/ 2/calculators/inverse_normal_ dist.html 1) Find the probability that a CD player will break down during the guarantee period. Round To one decimal place where appropriate. P(x< )= 2) Find the probability that a CD player will last between 2.8 and 6 years. Round to 2 decimal places. P( < x < )= 3) Fill in the blanks: Find k where k is the 70th percentile of the distribution for the time a CD player lasts. (Round to one decimal place if necessary) P( x < k )=
13.
The life of Sunshine CD players is
Using the Normal Distribution or Inverse Normal Distribution calculator where appropriate fill in the blanks:
http://onlinestatbook.com/2/ calculators/normal_dist.html or http://onlinestatbook.com/ 2/calculators/inverse_normal_ dist.html
1) Find the
P(x< )=
2) Find the probability that a CD player will last between 2.8 and 6 years. Round to 2 decimal places.
P( < x < )=
3) Fill in the blanks:
Find k where k is the 70th percentile of the distribution for the time a CD player lasts.
(Round to one decimal place if necessary)
P( x < k )=
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