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A researcher is interested in whether students who attend private elementary schools do any better on s standard test of intelligence than the general population of elementary school children. A random sample of 75 students at a private elementary school is tested and has a mean intelligence test score of 103.5. The average for the general population of elementary school children is 100 (σ = 15).
a) Is this a one- or a two- tailed tests? b) What are Ho and Ha for this study? c) Compute zobt d) What is zcv? e) Should Ho be rejected? What should the researcher conclude? f) Calculate the 95% confidence interval for the population mean, based on the sample mean.
Draw a scalene triangle and label the vertices, A,B, AND C. The side opposite vertex A is line segment BC. Find the midpoint of line segmentBC by constructing the bisector of line segmrnt BC. label the midpoint M.
The amount of time (in hours) that Sam studied for an exam on each of the last five days is given below. Find the mean study time.
Graphical Probability and Graphical Cumulative Probability. A fair coin is tossed 10 times. Let X be the number of tails observed.
Traders often buy foreign currency in hope of making money when the currency's value changes. For example, on February 17, 2006, one U.S. dollar could purchase 0.8382 Euros, and one Euro could purchase 140.9687 yen.
Please solve the following system of equations using both of these methods (solve once using substitution and once using elimination):
Find the probability of the indicated results Less than 259 heads
Note the terms: 0% interest for ? number of years, the instant dollar discount, the retail price of the vehicle, and the interest rate of the loan. Given those figures, which is the better deal and why? Support your answer with calculations.
If the snowfall from 36 randomly selected years are chosen, determine the probability that the snowfall would be less than 95 inches?
assume that all doors produced can be sold for a profit of $500 and all windows can be sold for a profit of $400. Formulate an LP model for this problem. sketch the feasible region. what is the optimal solution?
If the probability of seeing moose in a day in a certain region of Alaska is 0.47, what is the probability of not seeing any moose in a day there?
Clyde's Marina has estimated that fixed costs per month are $303,480 and variable cost per dollar of sales is $0.40.
Integral of e^(2x)*cos(3x)dx, what are you determining factor in choosing which to set to what?
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