# Numerical probability

25 Questions mixed types from a STAT class.

A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is:

What type of probability uses sample spaces to determine the numerical probability that an event will occur?

If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is

Find the variance of the following probability distribution.

X

P(X)

1

0.20

2

0.35

3

0.10

4

0.25

5

0.10

Which term is NOT synonymous with the expected value of a discrete probability distribution?

If a student randomly guesses at 20 multiple-choice questions, find the probability that the student gets exactly four correct. Each question has four possible choices.

The continuous distribution characterized by a symmetric, bell-shaped curve is the:

The standard deviation of a probability distribution must be:

The mean of a probability distribution can be:

The standard deviation of is usually called the

The theorem that states that the sampling distribution of the sample mean is approximately normal when the sample size n is reasonably large is known as the:

The standard normal distribution has a mean of ___ and standard deviation of ___, respectively.

rest on attach

Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount! Use Discount Code “Newclient” for a 15% Discount!NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.