Jason L

Most popular questions and responses by Jason L
  1. Statistics

    In the following cross tab or contingency table the favorite sport of 50 university students is cross classified with the gender of the respondent, What is the probability of 1 - P(female or basebal) and 2 - (football/male)

    asked on February 26, 2007
  2. Stats

    2 samples were collected to determine whether there was a difference between two weight loss methods targeting men. The average weight loss method is provided for the 2 samples along with the respective standard deviations. Is the second method - with an

    asked on February 23, 2007
  3. Statistics

    A building contractor claims that they can renovate a 200 sq foot kitchen and dining room in 40 work hours plus minus 5 (the mean and standard deviation respectively). The work includes plumbing, electrical installation, cabinets, flooring, painting and

    asked on March 2, 2007
  4. Statistics

    An entertainment company owns and operates movie theaters in Wyoming. The president of the company is concerned that film rentals are hurting the business. They directed a staff member to estimate the total number of films rented by households in wyoming

    asked on March 2, 2007
  5. Statistics

    A specially equipped trauma emergency room at a hospital has been in operation for 40 weeks and has been used a total of 108 times. Assuming the weekly pattern of demand for this facility is poisson compute the following - probability room is not used in a

    asked on March 2, 2007
  6. Statistics

    It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 5 minutes. A random sample of 100 oil changes yielded a sample mean of 22 minutes. Compute the 99% confidence interval estimate of

    asked on February 26, 2007
  7. Statistics

    part 2 - An entertainment company owns and operates movie theaters in Wyoming. The president of the company is concerned that film rentals are hurting the business. They directed a staff member to estimate the total number of films rented by households in

    asked on March 2, 2007
  8. Statistics

    A bottling company uses a filling machine to fill glass bottles with mango juice. The bottles are supposed to contain 300 milliliters (ml). In fact the amounts vary according to a normal distribution with mean = 298 and standard dev = 3 ml. What is the

    asked on March 2, 2007
  9. Statistics

    A bottling company uses a filling machine to fill glass bottles with mango juice. The bottles are supposed to contain 300 milliliters (ml). In fact the amounts vary according to a normal distribution with mean = 298 and standard dev = 3 ml. What is the

    asked on March 2, 2007
  10. Statistics

    Wrong tire pressure can increase tire wear and decrease gas mileage. A manufacturer of new tires tested the tire for wear at different pressures with the below results. Tire pressure (PPI:pounds per square inch) is related to how many miles a tire lasts,

    asked on February 26, 2007
  11. Statistics

    part 2 - An entertainment company owns and operates movie theaters in Wyoming. The president of the company is concerned that film rentals are hurting the business. They directed a staff member to estimate the total number of films rented by households in

    asked on March 2, 2007
  12. Statistics

    A local company has been in trouble recently over hiring male applicants rather than female. Recently 3 employees hired were all male even though the six applicants for the 3 positions included 3 females. The company claims that they have shaped up. From a

    asked on February 26, 2007
  13. Statistics

    In a particular suburb 30% of housholds have installed electronic security systems. If 2 households are chosen at random from this area, what is the probability that neither has installed a security system? Using the binomial probability function for this

    asked on February 26, 2007
  14. Statistics

    Below Find a sequence of probabilites generated using excel.What is this mystery poisson functions M? Be precise, down to one decimal and show work.

    asked on March 8, 2007
  15. Statistics

    A company claims that no more than 5% of a particular product has a defect. In a shipment of 15 units what is the probability of receiving 3 or 4 defective units? You can probably use a binomial probability function for this problem. P(x) =

    asked on February 26, 2007
  16. Stats

    It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 5 minutes. A random sample of 100 oil changes yielded a sample mean of 22 minutes. Compute the 99% confidence interval estimate of

    asked on February 26, 2007
  17. Statistics

    A survey of community banks asked about the loan to deposit ratio (LTDR) a banks total loans as a percent of its total deposits. The mean LTDR for the 110 banks in the sample is xbar = 76.7 and the standard deviation is s = 12.3. In the text a 95%

    asked on February 26, 2007
  18. Statistics

    A paper manufacturer claims that fewer than 1 in 100 of its reels (2 ton rolls) of paper is flawed. A customer has just received a large shipment of these reels and proceeds to check a random sample of 600 of them for flaws. Of this sample, 14 reels are

    asked on February 26, 2007
  19. Statistics

    A paper manufacturer claims that fewer than 1 in 100 of its reels (2 ton rolls) of paper is flawed. A customer has just received a large shipment of these reels and proceeds to check a random sample of 600 of them for flaws. Of this sample, 14 reels are

    asked on February 26, 2007
  20. Statistics

    Below Find a sequence of probabilites generated using excel. What is this

    asked on March 7, 2007
  21. Statistics

    What key problems can a supermarket address and solve utilizing the poisson/exponential combination?

    asked on March 7, 2007
  22. Statistics

    A manufacturer has observed that a certain product tends to fail either very early in its life span or quite late. The engineers are interested in studying a particular product going into cellular phones. They know that the average life span of the product

    asked on March 7, 2007
  23. Statistics

    It is known that the amount of time needed to change the oil in a car is normally distributed. A random sample of 100 oil changes yielded a sample mean of 22 minutes and a standard deviation of 5 minutes. Then compared to the interval estimate for the

    asked on February 26, 2007
  24. Stats

    the director of an insurance companies computing center estimates that the companies computer has a 20% chance of catching a computer virus. However they feel that there is only a 6% chance of the computers catching a virus that will completely disable the

    asked on February 23, 2007
  25. Statistics

    In a study that was highly published doctors discovered that aspirin helps prevent heart attacks. The research project which was scheduled to last 5 years employed 22,000 american physicians (all male). Half took an aspirin tablet 3 times a week while the

    asked on February 23, 2007