Shack Homebuilders Limited is evaluating a new promotional campaign that could increase home sales. Possible outcomes and probabilities of the outcomes are shown next. Possible Outcomes Ineffective campaign Normal response Extremely effective Additional Sales in Coefficient of variation Units 50 70 130 Probabilities 0.40 0.30 0.30 Compute the coefficient of variation. Note: Do not round intermediate calculations. Round your answer to 3 decimal places.

Adbir Corporation produces jewelry container for Colmar Jewelry. The company produces their product in their small-scale production plant. The following information relates with standard requirement for each unit of the container. Direct materials Direct labor Variable overhead 2kg @ RM6.00 per kg 5 hours @ RM4.00 per hour 5 hours @ RM3 per hour The production of the product had a budgeted fixed overhead of RM570,000 per annum. Overhead were absorb based on direct labor hours with monthly budgeted production unit of 1,900 units. Actual data for production in March 2021 was recorded as follows: (i) The direct materials recorded and charged to production are 4,900kg at RM6.20 per kg. (ii) Direct labor involved in the production was paid RM4.50 per hour. A total of 9,800 hours was recorded for the job. (iii) Variable overhead incurred was RM29,500 and fixed overhead is RM47,000. (iv) Jewelry container produced are 2,000 units.

Show me full answers and steps to part d) and e) Don’t use R or excel formula. Use expected formula and mean formula to calculate

4. There are 10 keys and only one of them can open a lock. We do not know which key can open the lock, but we will try them one by one until we find the right key. Let X denote the number of times tried to find the right key. (a) What is the p.m.f. of X? (b) What is the C.D.F. of X? (c) What is the mean and variance of X?