need a stats expert

2. Find the current 30 stocks that comprise the Dow Jones Industrial Average. Set up an Excel spreadsheet for their names, market capitalization, and one or two other key financial statistics (search Yahoo! Finance or a similar Web source). Using the PHStat tool, obtain a random sample of 5 stocks, compute point estimates for the mean and standard deviation, and compare them to the population parameters. 3. The weekly demand of a slowâ€Âmoving product has the probability mass function: Demand, x Probability, f(x) 0 0.1 1 0.3 2 0.4 3 0.2 4 or more 0 Set up the random number intervals needed to sample from this distribution. Then using the first column of random numbers in Table 4.1 , generate 20 samples from this distribution and construct a histogram of the results. 5. A government agency is putting a large project out for low bid. Bids are expected from 10 different contractors and will have a normal distribution with a mean of $3.5 million and a standard deviation of $0.25 million. Devise and implement a sampling experiment for estimating the distribution of the minimum bid and the expected value of the minimum bid. 9. Using the data in the Excel file MBA Student Survey, find 95% confidence intervals for the mean number of nights out per week and mean number of study hours per week by gender. Based on the confidence intervals, would you conclude that there is a difference in social and study habits between males and females? For a) and b) use t- distribution, For c) and d) use z-distribution 10. Using the data in the worksheet Consumer Transportation Survey, develop 95% and 99% confidence intervals for the following: a. The mean hours per week that individuals spend in their vehicles b. The average number of miles driven per week c. The proportion of individuals who are satisfied with their vehicle d. The proportion of individuals who have at least one child. 14. If, based on a sample size of 600, a political candidate finds that 318 people would vote for him in a twoâ€Â person race, what is the 95% confidence interval for his expected proportion of the vote? Would he be confident of winning based on this poll?