## Probability & Statistics Resources

If X is χ2(12), find constants a and b such that P(a < X < b) = 0.90 and P(X < a) = 0.05.

11 trades won and 32 trades lost on the first trade of the day. 10 trades won and 14 trades lost on the second trade of the day. 4 trades won and 5 trades lost on the third trade of the day...

As Program Director of a Radio Station, you receive a report from an independent service that shows that out of 100 songs played, the same song was played 7 times. Using the Empirical Approach, calculate...

A pharma company tests 100 drugs on human volunteers. Probability of failure in Phase I = 50%, . phase II = 30% and phase III = 40%: So how many drugs will successfully    Need...

A bakery sells two types of chocolate cakes, A and B. The production cost of cake A is \$20, and of cake B — \$30. The bakery sells cake A for \$30, and cake B — for \$42. Every day, the bakery...

A coin that flips 3 times and gets 2 heads

Let X and Y be stochastic variables. Assume Var(X)=1.74 and Cov(X,Y)=0.79 What is Cov(4X,4X+2Y).  Have tried to use the formulas for Var and Cov to get around this problem, but haven't...

Someone please help me with this question!!( Need it before tomorrow morning) X and Y are two random variables such that P(X = 0 n Y = a) = P(X = 0 n Y = -a) = P(X = a n Y = 0) = P(X = -a n Y = 0)...

The staff car park at the hospital has 330 spaces, and parking is restricted to permit holders. Data collected earlier indicate that only 85% of the permit holders will be at the hospital on a given...

Clarice has 7 new CDs; 3 are classical music and the rest are pop music. If she randomly grabs 3 CDs to listen to in the car on her way to school, what is the probability that she will select only...

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