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Q1) An urn contains 12 balls identical in every respect except their colour. There are three red balls, seven green balls, and two blue balls. You draw two balls from urn, but replace first ball before drawing the second. Determine the probability that first ball drawn is red and the second ball drawn is green.
Q2) Ann is applying for bank loan to open a pizza franchise. She should first complete a written application and then, if written application is approved, be interviewed by bank officers. If applicant's written application is not accepted applicant is not granted interview with the bank officers. Past records for this bank illustrate that probability of applicant having his or her written application approved is 0.63. Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
Q3) A restaurant menu has price-fixed complete dinner which consists of appetizer, entrée, beverage, and dessert. You have selection of 5 appetizers, 10 entrees, 3 beverages, and 6 desserts. How many possible complete dinners are possible?
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
How many subsets of S contain either the number 6 or the number 15?
Some of the factors affect statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
Interpret coefficient on log (salesm). If salesm were to be increased by 20%, what would be estimated change in mktgp? Would this effect be substantive?
A pair of dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.)
A gender selection method is effective in helping couples have baby girls, and among 45 babies, 24 are girls. Create subjective estimates to conclude that the evidence does support the claim or that the evidence does not support the claim. Use the..
Determining probability values using the Binomial distribution.Use the Binomial distribution to determine the probability that four or more of the contracts are in breach of the tendering guidelines.
Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee.
The means appear to be very close, but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour. Suppose the arrival of these emails is approximated by the Poisson distribution.
To sketch the 3-sigma X-bar chart and R-chart parameters. A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars.
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