Develop a joint probability

Assignment Help Basic Statistics

Reference no: EM13215776

"A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district contains 40%, and the central district contains 35%. A minimum-competency test was given to all students; 10
% of the north district students failed, 15% of the south district students failed, and 5% of the central district students failed.

a) Develop a probability tree showing all marginal, conditional, and joint probabilities.

b) Develop a joint probability table.

c) What is the probability that a student selected at random failed the test?

Reference no: EM13215776

Questions Cloud

What is the balance in accounts receivable on march 31 : Prepare a revised schedule of cash receipts if receipts from sales on account are 60% in the month of the sale, 30% in the month following the sale, and 10% in the second month following the sale. What is the balance in Accounts Receivable on Marc..

Estimate of the overall percentage of the b.c. : Construct a 89% confidence interval estimate of the overall percentage of the B.C. population in favour of such a casino and what size of sample would be required to do this

Find how much cash will davis borrow in february : Assume Davis Consulting began January with $29,000 cash. Management forecasts that cash receipts from credit customers will be $49,000 in January and $51,500 in February. Projected cash payments include equipment purchases.

What is the probability that a student selected at random : Develop a probability tree showing all marginal, conditional, and joint probabilities and what is the probability that a student selected at random failed the test?

Develop a joint probability : Develop a probability tree showing all marginal, conditional, and joint probabilities and develop a joint probability table.

Explain mortgage interest on residence : During the past year, she paid $2800 in interest on her car loan, $10,000 in mortgage interest on her residence, and $2500 in property taxes on that same home.

Prepare the entry to record original investment in piaffe : On July 1, 2013, Walter Allen Inc. purchased 6,000 shares of the outstanding common stock of Piaffe Corporation at a cost of $140,000. Piaffe had 30,000 shares of outstanding common stock. Assume the total book value and fair value of net assets i..

Extreme enough to reject the null hypothesis : When a result is not extreme enough to reject the null hypothesis, explain why it is wrong to conclude that your result supports the null hypothesis.

Calculate the standard potential for this cell : A galvanic (voltaic) cell consists of an electrode composed of magnesium in a 1.0 M magnesium ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for..

User Account

All Pages