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To determine whether four population means are equal, a sample from each population was selected at random and using the Kruskal-Wallis test, H was computed to be 2.11. What is your decision at the 0.05 level of risk?
Statistics and Probability, Statistics
According to a Field Poll, 79% of California adults (actual results are 400 out of 506 surveyed) feel that "education and our schools" is one of the top issues facing California. We wish to construct a 90% confidence int ...
The pH (acidity) of the liquor is critical for regulating dye uptake and hence the final color. There are 5 kettles, all of which receive dye liquor from a common source. Past data show that pH varies according to a Norm ...
What are some ways being able to visually see data in a graphic presentation beneficial?
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 35% chance of becoming myopic before they are 16. Children who sleep in ...
1. According to the latest poll, 750 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults who believe in global warming. Round your lower bound and upper b ...
A running shoe company wants to sponsor the fastest 3% of runners. You know that in this race, the running times are normally distributed with a mean of 6.8 minutes and a standard deviation of 0.37 minutes. How fast woul ...
On the ballot, Illinois voters had the option to select "yes" or "No" when asked if the state's minimum wage should be increased from $8.25 to $10 an hour by January 1, 2015. Before the actual voting date, a survey with ...
A coin is biased so that the probability of obtaining heads is ¾, What is the probability of obtaining at least three heads in four tosses of the coin?
If we are interested in job satisfaction. Name a variable that correlates with job satisfaction but we do not have causation. Name a variable that you believe may have a casual relationship with job satisfaction. Name a ...
The revenue function R(x) and the cost function C9X) for a particular product are given. These functions are valid for the specified range of values. Find the number of units that must be produced to break even. R(x) =20 ...
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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