Question

1. If cat weights have a distribution with mean 18 and standard deviation of 5, what...

1.

If cat weights have a distribution with mean 18 and standard deviation of 5, what is

the sampling distribution of the sample mean for samples of size 400?

b.

The probability that someone likes pizza given they have brown hair is 80%?

The probability that someone has brown hair is 30%. What is the probability that

someone likes pizza and has brown hair

c. The probability that someone likes cake and has blonde hair is 15%. The probability

that someone has blonde hair is 20%. What is the probability that someone likes cake

given they have blonde hair?

d. Suppose Y takes the values 10,20, or 30, each with equal probability. What is the

expected value (or what is the mean value) of Y?

e. Suppose now Y takes the values 10,20, or 30 with the corresponding probabilities .2,

.1, and .7. Give the expected value (or the mean value) of Y and show

Math   Statistics-And-Probability   
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