hello. I am currently taking survey of stats and need help answering these questions please

*9 33% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and ve inclusive. If convenient, use technology to nd the probabilities. (a) P(2) = (Round to the nearest thousandth as needed.) (b) P(x > 2) = (c)P(2$xS$)= (Round to the nearest thousandth as needed.) (Round to the nearest thousandth as needed.) Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. n=50,p=0.9 The mean, p, is . (Round to the nearest tenth as needed.) 2. is . (Round to the nearest tenth as needed.) The variance, 6 The standard deviation, a, is . (Round to the nearest tenth as needed.) Construct the indicated condence interval for the population mean p using the tdistribution. Assume the population is normally distributed. c=o.9o. i=14.3, s=2.0, n=10 The 90% condence interval using a tdistribution is , D . (Round to one decimal place as needed.) Use the values on the number line to find the sampling error . X = 3 .7