Given information
Use the following information to answer the next two exercises: The life of Sunshine CD players is normally distributed with a mean of 
years and a standard deviation of 
years. A CD player is guaranteed for three years. We are interested in the length of time a CD player lasts.
Step-by-step explanation
The probability gives the likelihood of a specific event that it will occur.
The value of probability lies between 
and 
The probability of a random variable say 
is usually denoted by 
.
Therefore, the probability of the random variable assuming any specified value is denoted by 
.
The probability of the random variable assuming less than or left of any specified value is 
, and the probability of the random variable assuming more than or right of any specified value is 
.
Therefore, the area to the right of 
in the given probability statement represents the probability of the random variable taking values greater than .
In mathematical notations, this can be written as,
.
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Introductory Statistics
Solutions
Chapter
Section
- Problem 1
- Problem 2
- Problem 3
- Problem 4
- Problem 5
- Problem 6
- Problem 7
- Problem 8
- Problem 9
- Problem 10
- Problem 11
- Problem 12
- Problem 13
- Problem 14
- Problem 15
- Problem 16
- Problem 17
- Problem 18
- Problem 19
- Problem 20
- Problem 21
- Problem 22
- Problem 23
- Problem 24
- Problem 25
- Problem 26
- Problem 27
- Problem 28
- Problem 29
- Problem 30
- Problem 31
- Problem 32
- Problem 33
- Problem 34
- Problem 35
- Problem 36
- Problem 37
- Problem 38
- Problem 39
- Problem 40
- Problem 41
- Problem 42
- Problem 43
- Problem 44
- Problem 45
- Problem 46
- Problem 47
- Problem 48
- Problem 49
- Problem 50
- Problem 51
- Problem 52
- Problem 53
- Problem 54
- Problem 55
- Problem 56
- Problem 57a
- Problem 57b
- Problem 58a
- Problem 58b
- Problem 59a
- Problem 59b