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The shelf life of a particular type of battery is being studied. Twenty batteries are tested and the mean shelf life of the sample is Xbar=24.5 months. The estimated standard deviation is one month. Find a 95% confidence interval for shelf life
Statistics and Probability, Statistics
Great start to our discussion on short term planning and the operating and cash cycles. talk about if every businesses have similar operating cycles? If not give examples of how and why they are different? Give referen ...
Metro trains in Manhattan arrive at your train station exactly every 15 minutes (i.e., the times between arrivals are 15, 15, 15, and 15 in an hour). If you just arrived at the train station at a random time, what is the ...
In a production process, a product is assembled by using four independent parts (A, B, C, and D). In order for the part to operate properly, each part must be free of defects. The probability that the parts are defect-fr ...
An aerospace company has submitted bids on two separate federal government defense contracts, AandB . The company feels that it has a 60% chance of winning contract Aand a 30% chance of winning contractB . If it wins co ...
Suppose a researcher is interested in the number of good versus bad dreams that students have during final exam week. The researcher states that p = 0.52 that a student will have a bad dream during final exam week. (a) ...
Based on the 1990 census, the number of hours per day adults spend watching television is approximately normally distributed with a mean of 5 hours and a standard deviation of 1.3 hours. What proportion of the population ...
Determine the margin of error for an 80?% confidence interval to estimate the population mean when s? = 36 for the sample sizes below. ?a)n=12 ?b)n=26 ?c)n=54 ?a) The margin of error for an 80?% confidence interval when ...
A calculus student takes a 20 question multiple choice test with five answer choices for each question. Find the probability of getting atleast 70 percent of the question correct? Suppose a family has 5 children and that ...
A basket contains 5 bananas and 5 apples. Each of ten people picks two fruits at random from the basket without replacement. (a) What is the probability that the first people picks one apple and one banana? (b) What is t ...
During this course, you have compiled a marketing plan for your fictional start-up company. Share the most important part of the marketing plan, and include an explanation of your company and product/service, situation a ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As