Statistics and Probability Answers

A card is drawn from pack of 52 cards and it is thrown away.Then another card is drawn.Find the probability that it is a queen.

According to a report from the center off studying health system change 20 percent of Americans will delay or go without medical are because of concerns about cost. Suppose 8 individuals are randomly selected. What is the probability that at least 7 will delay or go without medical care. Round answer to 4 decimal places and show work.

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select is a spade or Queen? Your answer must be accurate to three decimal places.

two dice, one red and one green are tossed, find
p(red die even score/green die even score)

A researcher collected data on a sample of 301 patients. The variable of interest was the percentage of subjects with impaired fasting glucose (IFG). IFG refers to a metabolic stage intermediate between normal glucose homeostasis and diabetes. In the study, 24 patients were classified in the IFG stage. The article cites population estimates for IFG among all patients in that area as 6.3 percent. Is there sufficient evidence to indicate that the population of patients has a prevalence of IFG different from 6.3 percent? Use a level of significance of 0.01 to conduct the test.

Conditional Probabilities:Select all of the following statements that are true for all joint distributions over X and Y

P(x,y)=P(x)P(y)
P(x,y)=P(x|y)P(y)
P(x,y)=P(x|y)P(y|x)
P(x)=∑yP(x|y)
P(x)=∑yP(x,y)
None of the above.

Expectations:
Someone rolls a fair six-sided die and you win points equal to the number shown. What is the expected number of points after one roll? After 2 rolls? After 100 rolls?

You are playing a solitaire game in which you are dealt three cards without replacement from a simplified deck of 10 cards (marked 1 through 10). You win if one of your cards is a 10 or if all of your cards are odd. How many winning hands are there if different orders are different hands? and also what is your chance to win

Your box of cereal may be a contest winner! It's rattling, which 100% of winning boxes do. Of course 1% of all boxes rattle and only one box in a million is a winner. What is the probability that your box is a winner? Please specify your answer as a probability (i.e. .05 rather than 5%).

which of the following are continuous variables, and which are discrete?
a) speed of an airplane
b)age ofa college professor chosen at random
c) number of books in the college bookstore
d) weight of a football player chosen at random
e) number of lightening strikes in rocky mountain national park on a given day