Statistics and Probability Answers

Determine the probability of rolling a die, and it landing on a 6, and a ball on a roulette wheel landing on an even number (the roulette wheel contains the numbers 1 to 36, ignore zero and double zero) State whether the events are dependent or independent.

A bag contains three coins, one of which is coined with two heads, while the other two coins are normal and not biased. A coin is chosen at random from the bag and tossed four times in succession. If heads turn up each time. what is the probability that this is the two headed coin?

it has been found that 80%of the geometry students pass the chapter test on conguent triangles. If a class of 15 students, find the probability that a least one student will fail

greg has a 78% chance of making par on each hole he decides to play in golf. Today he plans to play just three holes. Find the probability that..
A greg makes par on all three holes
Bgreg makes does not make par on any hole
c greg makes par on at least one hole
D greg makes par on the first and third hole, but not the second hole

height of men on a baseball team have a bell-shaped distribution with a mean of 171 cm and a standard deviation of 7cm and a standard deviation of 7 cm. Using the empirical rule, what is the approximate percentage of the men between the following values.
what percent of men are between 157 cm and 185 cm.
what percent of men are between 164 cm and 178 cm

Calculate the margin of error in estimating a population mean , using confidence interval of 95% , mean of 50 and sigma squared of 0.25

The question is I have 52 cards with a deal of 8 cards.& I need to get probability of getting 4 face cards and 4 other cards.&

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ score separating the top 10% from the others.

The mean is 25.2 and the standard deviation is 0.8

Find the probability that X is between 24.3 and 26.0

sketch a normal curve.

a flashlight has 10 batteries 5 of which are defective if 5 are selected at random without replacement find the probability that all of them are defective