A 60-watt outdoor lightbulb is advertised as having an, Ask an Expert

Statistics

A 60-watt outdoor lightbulb is advertised as having an average life (i.e. MTTF) of 1,000 operating hours. However, experience has shown that it will also fail on demand an average of once every 120 cycles. A particular bulb is turned on once each evening for an average of 10 hours. If it is desired to have a reliability rate of 90 percent, what is its design life in days (assuming it follows a constant failure rate)?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91015804

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Felcor stock is currently selling for 4000 a share but is

Felcor stock is currently selling for $40.00 a share but is expected to either decrease to $36 or increase to $44 a share over the next year. The risk-free rate is 4 percent. What is the current value of a 1-year call op ...

Suppose you perform a multiple regression to predict crime

Suppose you perform a multiple regression to predict crime rate in a state and includes as indicators of predictions the homeownership rate divorce rate and the personal bankruptcy. Explain how to conduct a test of hypot ...

1 prince georges county publicnbspschools wants to access

1) Prince George's County Public Schools wants to access the effectiveness of its new 1st grade reading program. Ten 1st grade classrooms are randomly selected from across the county. What kind of sampling method is bein ...

Mrs salmon agrees to repay a loan by paying 500 at the end

Mrs. Salmon agrees to repay a loan by paying $500 at the end of each month for 5 years. The first payment is due at the end of the 6th month from today and the remaining payments will continue for another 59 months. If t ...

Suppose you just purchased a digital music player and have

Suppose you just purchased a digital music player and have put 9 tracks on it. After listening to them you decide that you like of the songs. With the random feature on your? player, each of the 9 songs is played once in ...

Gala apples sampled at random from a specific orchard in

Gala apples sampled at random from a specific orchard in New Zealand have a mean weight of μ= 147g with a variance of σ2= 841g^2, and the weights follow a normal distribution quite well. The grower wants to sell the appl ...

If the coefficient of determination is 0233 what percentage

If the coefficient of determination is 0.233, what percentage of the data about the regression line is explained? How do I go about solving this?

Stocks a b and c have expected returns of 12 percent 12

Stocks A, B, and C have expected returns of 12 percent, 12 percent, and 10 percent, respectively, while their standard deviations are 42 percent, 30 percent, and 30 percent, respectively. If you were considering the purc ...

A system consists of five independent components in

A system consists of five independent components in parallel. The system will work if at least one of the five components works. Let Ci represent the event that component i works, i=1,...,5. P(Ci)=0.97 for all i. What is ...

Let be a random variable with probability

Let be a random variable with probability function f ( x )=144/205 x^ 2 , where x =1,2,3,4. (a) Find the expected value of X (b) Find the expected value of Y =2 X +3

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert