Answers created by Ramchandran A.
 Back to user's profile

What are the mean and standard deviation of a binomial probability distribution with #n=130 # and #p=3/4 #?

What does the confidence interval of a sample tell you?

Why can't variance be negative?

Why is sample size important when analyzing data?

How do you determine the variance of a Poisson distribution?

What defines a strong or weak correlation?

What is central tendency?

What is the difference between correlation and association?

What does a negative covariance mean?

Is there a difference between a correlation and a correlation coefficient?

What is statistical significance?

What is Bayes' theorem?

What is Bayes' theorem?

What is Bayes' theorem?

What is Bayes' theorem?

If the probability of events A & B occurring are P(A) = 0.3 and P(B) = 0.8, what is the probability that both A & B occur?

What is a binomial distribution?

Why can a binomial distribution be used to model the results of a coin toss?

What is the relationship between the correlation of two variables and their covariance?

What does a correlation coefficient indicate about data?

What is the mathematical formula for the variance of a continuous random variable?

Why is a 90% confidence interval narrower than a 95% confidence interval?

The probability that a contractor will get a plumbing contract is 2/3 and the probability that he will get an electric contract is 5/9. If the probability of getting at least one contract is 4/5, what is the probability that he will get both?

What is the difference between the mean, median, and mode?

What is the expected value of a coin toss game where you win $2 for each heads and lose $3 for each tails?

What does independent and identically distributed mean?

If you roll a fair die three times, what is the probability that none of your rolls is a number divisible by 3?

What does discrete mean?

What can covariance be used for?

What does it mean if the correlation coefficient between two variables is negative?

A 28yearold man pays $165 for a oneyear life insurance policy with coverage of $140000. If the probability that he will live through the year is 0.994, what is the expected value of the insurance policy?

What is the variance of 10 coin flips?

Can a continuous random variable have a median?

How are continuous and discrete treated differently?

In a symmetric distribution, are the mean, median, and mode necessarily equal?

Why is standard deviation not a measure of central tendency ?

What does quantitative mean?

What is a correlation?

What happens to the confidence interval if you increase the confidence level?

What does a 95% confidence interval versus a 99% confidence interval tell you?

The 6 entries in Claudia's checkbook ledger show both deposits and withdrawals. Claudia wrote down $100, 20, 35, $250, $150, and 85. What is the mean dollar amount for these entries?

How do you calculate the expected value of a random variable?

Question #50c00

How does the sample variance differ from the population variance?

What is the variance of a binomial distribution for which n = 75 and p = 0.20?

What is the variance of {15, 14, 13, 13, 12, 10, 7}?

A bin contains 71 light bulbs, of which 9 are defective. If 6 light bulbs are randomly selected from the bin without replacement of the selected bulbs, what is the probability that all of the selected bulbs are good?

What is the purpose of hypothesis testing in statistics?