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A report states that 73% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.03 with 98% confidence?
Statistics and Probability, Statistics
A researcher calculates a 90% confidence interval of (3397, 3421) to estimate the population birth weight using a random sample of 84 babies born to mothers with gestational diabetes. She wants to compare this range to t ...
A clinical psychologist is the primary therapist for 18 patients. She randomly selects a sample of 3 patients to be in her study. How many different samples of this size can be selected from this population of 18 patient ...
Suppose a sample space has things a,b and c. Twice, draw from the sample space and replace. The possible sequences formed are {aa, ab, ac,ba,bb, bc,ca,cb,cc} Now suppose there are Y different things. There are Y ways the ...
Assume that the fisherman can use between 5 and 8 lines. With 5 lines, the probability of a catch on each line is 0.71. With 6 this probability is 0.63, with 7 it is 0.51, and with 8 the probability is 0.43. 1) How many ...
Data collected over a long period of time showed that a particular genetic defect occurs in 1 of every 1000 children. Let X be the random variable "number of children with genetic defect in a sample of 50,000 children ex ...
1) Three-circle, red-on-white is one distinctive pattern painted on ceramic vessels of the Anasazi period found at an archaeological site. At one excavation, a sample of 165 potsherds indicated that 74 were of the three- ...
As parts come off a production line they are stored in trays capable of holding 30 parts each. If the average tray contains 6 defective parts and you sample only 1 part from each tray, what is the probability that the pa ...
Given a trendline of y = 5832x + 135799, where the variable x represents the age of a home (in years) and the variable y represents its current market value (in dollars), use this trendline to predict the current market ...
Research Scenario: Children who experience chronic pain as a result of medical procedures are the focus of a psychiatrist's study. Specifically, the psychiatrist wants to measure whether a new program helps decrease fee ...
Suppose that 20% of men (P=.20) and 15% of women (P= .15) are carriers of a particular genetic trait. That trait can only be inherited by a child if both parents are carriers. What is the probability that a child is born ...
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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