please help with my quantitative methods assignment
1) A certain grocery store has created the following tables of intervals of random numbers with regard to the number of people who arrive at its three checkout stands ready to check out, and the time it takes to check out the individuals. Simulate the utilization rate of the three checkout stands over four minutes using the following random numbers for arrivals: 07, 60, 49, and 95. Use the following random numbers for service: 77, 76, 51, and 16. Describe the results at the end of the four-minute period. Arrivals Interval of Interval of Random #s Service Time Random #s 01-30 01-10 IN 31-80 11-40 81-00 41-80 81-00 2) A computer start-up named Pear is considering entering the U.S. market with what they believe to be a smaller and faster computer than some of the existing products on the market. They want to get a feel for whether or not customers would be willing to switch from some of the existing bigger brands to consider their product. They want to collect a reasonable sample from across the United States representative of all age brackets. They have split the United States into 2 regions: East and West. They want at least 65% of their sample to cover the East and no fewer than 25% of the West. They also have divided the age groups into 3 categories: 18-35, 36-69, and 70 and up. They want at least 50% of their sample to be between 18 and 35 and at least 40% to be between 36 and 69. The costs per person surveyed is given in the table below: Region 18-35 36-69 70 and up East $2.50 $2.00 $1.50 West $3.50 $3,00 $2.00 Assume that at least 1,000 people are to be surveyed. The problem is for Pear Company to decide how many people to survey from each age bracket within each region in order to minimize costs while meeting requirements. Find the optimal solution and minimum cost. Table 11-7 A project manager calculated early and late start and finish times for all activities in her eight-activity project but spilled her energy drink on the paper and the acid in the beverage wiped out some of the table entries. The remaining legible entries are correct. Activity Predecessor |Duration ES EF LS LF Slack A B 12 12 C A 5 18 D B E C D.E 27 G I E 6 33 F,G 34 40 3) Consider the project summarized in Table 11-7. Provide all missing information.Assignment (I'D 4) The H.A.L. Computer Store sells a printer for $200. Demand for this is constant during the year, and annual demand is forecasted to be 600 units. The holding cost is $20 per unit per year, while the cost of ordering is $50 per order. Currently, the company is ordering 12 times per year [50 units each time). There are 250 working days per year and the lead-time is 10 days. {a} Given the current policy of ordering 50 units at a time, what is the total of the annual ordering cost and the annual holding cost? (b) If the company used the absolute best inventory policy, what would the total of the ordering and holding cost be? {c} What is the reorder point? 5} Anne Beck recently took over a beauty supply store. Her predecessor always ordered shampoo in quantities of 100 units. Anne is reevaluating this policy. Based on her analysis, the cost to place each order is $35 and the holding cost is $3 per shampoo bottle per year. The annual demand for this product is 25% bottles. Should Anne change the current order policy and, if so, hostr much can she saye
