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The results of a one-sample hypothesis test are reported as follows: t(18) = 2.25, p < .05. Based on this report, what was the statistical decision and how big was the sample?
The proposed site is near the rail terminal, but state government might extend the highway to area. In addition, the federal government is considering rebuilding local port facilities. Below is the p
A company manufactures two products, Product A and Product B. The wholesale price and manufacturing cost of each product are shown below.
Determine the average annual food price index for all years from 2008 to 2013. Use 3-year weighted moving average with weights of 0.5, 0.3, and 0.2. Use largest weight with most recent data.
Consider following information and then compute required rate of return for Scientific Investment Fund, which holds 4 stocks.
Last week's sales of iMac computers at an Apple Store in Oklahoma City, OK,are shown in the following table:
You have following data on (1) average annual returns of market for the past 5 years and (2) similar information on Stocks A and B.
A store wishes to predict net profit as a function of sales for the next year.The following table gives the years 1998 to 2005.
Assume a manufacturing company makes a certain item. The time to produce each item is normally distributed around the mean of 27 minutes with standard deviation of 2.5 minutes. Thus, the population
The number of cell phone accounts in certain country has increased exponentially for last decade. Find approximate number of cell phone accounts in 2005?
How much will be left after 13,000 years? Find how long it will take for 1 kilogram to decay to half it's original weight.
How many solution sets do systems of linear inequalities have? Do solutions to systems of linear inequalities need to satisfy both inequalities?
A rectangle has an area of 72 square meters and a side length of 9 meters. Compute the perimeter of the rectangle?
The time to produce each item is normally distributed around the mean of 27 minutes with standard deviation of 2.5 minutes. Thus, the population of production times is normal in shape. Determine the
Explain a greatest common factor? How do you know when you have found the greatest one?
Discuss how to factor following trinomial forms: x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.
Compute the derivative of the function f(x) = (3 x + 1)^4(9 - 3 x^2)^{3/2}.
Discuss the techniques used to solve equation containing radical expressions. Why is it necessary to check the solutions for such equation? Give an example - solve it and check its solutions.
Write an essay (suggested length of 1-2 pages) in which you describe how student error, student and teacher misconceptions, and instructional activities are interrelated in mathematics instruction.
Find significant difference in automobile insurance rates in different cities of comparable size in U.S.? To answer this question a survey was taken in 3 cities.
The average price (x¯) is determined to be $1.20 per liter. What formula would you use to find out whether new efficiency measures were effective? (a = 0.05)
The standard deviation of population (σ) is $750, what formula would you use to find out 95% confidence interval for true mean advertising expense?
Why would nickel diameters differ? Create 99 percent confidence interval for true mean diameter of nickel. Explain any assumptions which are needed.
Describe (in detail) each step of machine cycle. Illustrate contents of each of registers and each of memory cells after execution of the code.
Explain research hypothesis and null hypothesis, difference between two, and what makes a good hypothesis. What do you mean by one-tailed and two-tailed hypothesis?