Supposed random variable X has a Binomial distribution with 10 trials and probability of success​ = 0.4. What is​ E(X)?

X is a normally distributed variable with mean = 60 and standard deviation = 10 %3D For a randomly selected score from this distribution what is the probability that X is less than 42

You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.23. Thus you are performing a right-tailed test. Your sample data produce the test statistic z = 2.831. Find the p-value accurate to 4 decimal places. p-value =

level of blood glucose and diabetes are closoly related. Let x bo a random variable measured in milligrams of glucose per deciliter of od. After a 12-hour fast, th random variable x will have a distribution that is approximately normal with mean - 85 and standard deviation 5. What is the probability that for an adult after a 12-hour fast. s less than 7o, b. x is greater than 120?

You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.51. Thus you are performing a right-tailed test. Your sample data produce the test statistic z =1.872. Find the p-value accurate to 4 decimal places.p-value =

You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.25. Thus you are performing a two-tailed test. Your sample data produce the test statistic z = 2.931. Find the p-value accurate to 4 decimal places. p-value =

An excess of high values for the cases distributed on a graph results in a positive skew in the data?