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Question: Heights for teenage boys and girls were calculated. The mean height for the sample of 12 boys was 174 cm and the variance was 62. For the sample of 12 girls, the mean was 166 cm and the variance was 65. Assuming equal variances and normal distributions in the population,
(a) What is the 95% confidence interval on the difference between population means?
(b) What is the 99% 364 confidence interval on the difference between population means?
(c) Do you think it is very unlikely that the mean difference in the population is about 5? Why or why not?
about 6 percent of the population are hopelessly romantic, if two are randomly selected, what are the probability that both are hopelessly ramantic.
Determine the limit by evaluating the function for x = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 50, and 100, If an answer does not exist, enter DNE.
Where f , h, and m are given functions, Y is national income, C is consumption, I is investment, G is public expenditure, T is tax revenue, r is the interest rate, and M is the money supply (or more exactly, the quantity of money in circulation). ..
A firm produces two goods A and B. The firm earns a profit of 300 from each unit of good A, and 200 from each unit of B.
thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world.
Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 pound mixture that is 8% protein?
Sketch the slope field for the ODE x'=(1-x^2)(sin(t)-x) . Sketch the slope fields for the solutions satisfying the given conditions: x(0)=0, x(0)=-0.5, x(0)=1, x(1)=1.5
for lax-wendroff schemea compute the local trunction error and show that the scheme is second order in space and time.b
The book cost (in dollars) for one semester's books are given below for a sample of five college students. Calculate the sample variance of the book costs.
The criteria will be created by you, which will be posted on the website to be seen by entrepreneurs.
A box of books weight 100lbs. The box itself weights 12 oz. If the box holds 16 books, what is the average weight of each one? (Round your answer to the nearest half-pound)
How many TV sets should the company manufacture each day to maximize the revenue and what is the maximal revenue?
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