The time to failure of a battery in hours of a personal

Assignment Help Basic Statistics

Reference no: EM13604933

The time to failure of a battery in hours of a personal handheld music device follows an exponential distribution. The expected battery life is 2000 hours.

a) Give the appropriate pdf

b) Calculate the cdf. F(X) = P(X<x)

c) What is the expected value and standard deviation in days?

d) What is the probability that a randoly chosen device has a battery that lasts over 2100 hours?

e) Suppose a family of 6 each purchases a new personal handheld music device. What is the probablilty that all 6 of the devices last over 2100 hours?

Reference no: EM13604933

Questions Cloud

What is the magnitude and direction of the electric field : point charges of 28.0 microc and 46.0 microc are placed 0.500 m apart.a at what point along the line connecting them is

Deshaies corporation is preparing its cash budget for : deshaies corporation is preparing its cash budget for november. the budgeted beginning cash balance is 10000. budgeted

Nascent inc acquires 60 percent of sea breeze corporation : nascent inc acquires 60 percent of sea breeze corporation for 414000 cash on january 1 2010. the remaining 40 percent

What is the ratio of the speed of waves on the shorter : two stretched strings are placed next to one another one with a length of 70.0 cm and the other with a length of 84.0

The time to failure of a battery in hours of a personal : the time to failure of a battery in hours of a personal handheld music device follows an exponential distribution. the

Tb 79 salge inc bases its manufacturing overhead budget on : tb 79 salge inc. bases its manufacturing overhead budget on budgeted direct labor- hours. the variable overhead rate is

Xavier and yolonda have original investments of 50000 and : xavier and yolonda have original investments of 50000 and 100000 respectively in a partnership. the articles of

A guitar string with a linear density of 20 gm is : a guitar string with a linear density of 2.0 gm is stretched between supports that are 61 cm apart. the string is

Give an example of transaction that results in a decrease : give an example of transaction that results ina decrease in assets and decrease in liability?b a decrease in one asset

User Account

All Pages