Problem regarding the battery recall

Assignment Help Basic Statistics

Reference no: EM131009022

Battery recall

A company has discovered that a recent batch of batteries had manufacturing flaws, and has issued a recall. You have 10 batteries covered by the recall, and 3 are dead. You choose 2 batteries at random from your package of 10.

a) Has the assumption of independence been met? Explain.

b) Create a probability model for the number of good bat- teries chosen.

c) What's the expected number of good batteries?

d) What's the standard deviation?

Reference no: EM131009022

Questions Cloud

Why is the standard deviation so large : At a casino, people play the slot machines in hopes of hitting the jackpot, but most of the time, they lose their money. A certain machine pays out an average of $0.92 (for every dollar played), with a standard deviation of $120.

Repair calls-insurance company : Repair calls. A small engine shop receives an average of 1.7 repair calls per hour, with a standard deviation of 0.6. What is the mean and standard deviation of the number of calls they receive for an 8-hour day? What, if anything, did you assume?

What is the standard deviation : A grocery supplier believes that the mean number of broken eggs per dozen is 0.6, with a standard deviation of 0.5. You buy 3 dozen eggs without checking them. a) How many broken eggs do you expect to get? b) What's the standard deviation?

What would make a personality test reliable and valid : Have you ever taken a personality test before? If so, what was your reaction to the analysis? If not, what would you expect a proper test to measure? What would make a personality test reliable and valid

Problem regarding the battery recall : A company has discovered that a recent batch of batteries had manufacturing flaws, and has issued a recall. You have 10 batteries covered by the recall, and 3 are dead. You choose 2 batteries at random from your package of 10.

Outcomes of the two contract bids independent : Your company bids for two contracts. You believe the probability that you get contract #1 is 0.8. If you get contract #1, the probability that you also get con- tract #2 will be 0.2, and if you do not get contract #1, the probability that you get ..

Define and explain the nature of denial mechanism : Define and Explain the nature of this mechanism. Discuss a time when you may have used this mechanism. If you cannot do this, give an example of someone else using the mechanism, based on your own observations

Problem regarding the fishing tournament : According to their estimates, are the two tournaments independent? Explain your answer. What's the probability that he loses both tournaments?

What topics would the team like to cover in more depth : What did the team find to be the most interesting aspects of this week? What topics would the team like to cover in more depth? The team summary should express critical reflection of readings and experiences

User Account

All Pages