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If for 15 test areas of equal size he obtained a mean drying time of 66.8 minutes and a standard deviation of 8.7 minutes, construct a 99% confidence interval for the true mean.
Statistics and Probability, Statistics
In the game of? roulette, a player can place a ?$7 bet on the number 18 and have a 1/38 probability of winning. If the metal ball lands on 18?, the player gets to keep the ?$7 paid to play the game and the player is awar ...
How do you calculate true population proportion if your defective sample is too small? For example, if you have 50 and defect is 4. Please look below for more details
You are lost on the Mythy Island in the summer, when tourists are two-thirds of the population. If you ask a tourist for direction the answer is correct with probability ¾; answers to repeated questions are independent e ...
A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard deviation σ = 30. (a) How large must n be if the length of the 95% CI ...
From a sample of 35 presidential elections - 19 of those have been Republican (R) victories - and 16 have been Democrat (D) victories. I need to know how to construction a 95% confidence interval about the proportion o ...
The Waiting time for a Pizza order is supposed to be no more than 10 minutes. Some complaints have been received that the orders are in fact taking longer than the claimed 10 minutes. A batch of 50 orders was timed and f ...
1. Out-of-state tuition and fees at the top graduate schools of business can be very expensive, but the starting salary and bonus paid to graduates from many of these schools can be substantial. The following data show t ...
How does sampling distribution from an area such as business, and sports, used in marketing
A jar of peanut butter contains 451 grams with a standard deviation of 10.6 grams. Assuming a normal distribution, find the probability that a jar contains less than 448 grams.
You decide to further your research project by hypothesizing that the true average core body temperature amidst higher ambient temperature and humidity levels for the population who do not use electric fans is greater ...
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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