# Question

In an effort to check the quality of their cell phones, a manufacturing manager decides to take a random sample of 10 cell phones from yesterday’s production run, which produced cell phones with serial numbers ranging (according to when they were produced) from 43005000 to 43005999. If each of the 1000 phones is equally likely to be selected:

a) What distribution would they use to model the selection?

b) What is the probability that a randomly selected cell phone will be one of the last 100 to be produced?

c) What is the probability that the first cell phone selected is either from the last 200 to be produced or from the first 50 to be produced?

d) What is the probability that the first two cell phones are both from the last 100 to be produced?

a) What distribution would they use to model the selection?

b) What is the probability that a randomly selected cell phone will be one of the last 100 to be produced?

c) What is the probability that the first cell phone selected is either from the last 200 to be produced or from the first 50 to be produced?

d) What is the probability that the first two cell phones are both from the last 100 to be produced?

## Answer to relevant Questions

A website manager has noticed that during the evening hours, about 3 people per minute check out from their shopping cart and make an online purchase. She believes that each purchase is independent of the others and wants to ...Suppose the archer from Exercise 58 shoots 10 arrows. a) Find the mean and standard deviation of the number of bull’s-eyes she may get. b) What’s the probability that she never misses? c) What’s the probability that ...From the mutual funds in Exercise 23 with quarterly returns that are well modeled by a Normal model with a mean of 6.2% and a standard deviation of 1.8%, find the cutoff return value(s) that would separate the a) Highest ...Based on the model Af(0.062, 0.018) for quarterly returns from Exercise 23, what are the cut-off values for the a) Highest 10% of these funds? b) Lowest 20%? c) Middle 40%? d) Highest 80%? Exercise 23 proposes modeling quarterly returns of a group of mutual funds with N(0.062, 0.018). The manager of this group of funds would like to flag any fund whose return is unusually low for a quarter. What level of ...Post your question

0