Questions from Applied Statistics

Q: A survey of 156 introductory statistics students showed the following contingency table

A survey of 156 introductory statistics students showed the following contingency table. Find each event probability. a. P(D) b. P(R) c. P(D > R) d. P(D ∪ R) e. P(R | D) f....

Q: This contingency table describes 200 business students. Find each probability and

This contingency table describes 200 business students. Find each probability and interpret it in words. a. P(A) b. P(M) c. P(A > M) d. P(F > S) e. P(A | M) f. P(A | F) g. P(F | S) h. P(...

Q: The diameter of bushings turned out by a manufacturing process is a

The diameter of bushings turned out by a manufacturing process is a normally distributed random variable with a mean of 4.035 mm and a standard deviation of 0.005 mm. A sample of 25 bushings is taken...

Q: The following contingency table shows average yield (rows) and average

The following contingency table shows average yield (rows) and average duration (columns) for 38 bond funds. For a randomly chosen bond fund, find the probability that: a. The bond fund is long dura...

Q: A drug test for athletes has a 5 percent false positive rate

A drug test for athletes has a 5 percent false positive rate and a 10 percent false negative rate. Of the athletes tested, 4 percent have actually been using the prohibited drug. If an athlete tests p...

Q: An airport gamma ray luggage scanner coupled with a neural net artificial

An airport gamma ray luggage scanner coupled with a neural net artificial intelligence program can detect a weapon in suitcases with a false positive rate of 2 percent and a false negative rate of 2 p...

Q: In the Minnesota Northstar Cash Drawing you pick five different numbers between

In the Minnesota Northstar Cash Drawing you pick five different numbers between 1 and 31. What is the probability of picking the winning combination (order does not matter)? Hint: Count how many ways...

Q: At Oxnard University, a student ID consists of two letters (

At Oxnard University, a student ID consists of two letters (26 possibilities) followed by four digits (10 possibilities). (a) How many unique student IDs can be created? (b) Would one letter followed...

Q: A real estate office has 10 sales agents. Each of four

A real estate office has 10 sales agents. Each of four new customers must be assigned an agent. (a) Find the number of agent arrangements where order is important. (b) Find the number of agent arrange...

Q: Calculate the FPCF for each sample and population size. Can the

Calculate the FPCF for each sample and population size. Can the population be considered effectively infinite in each case? a. N = 450, n = 10 b. N = 300, n = 25 c. N = 1800, n = 280