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A researcher predicts that listening to music while solving math problems will make a particular brain area more active. To test this, a research participant has her brain scanned while listening to music and solving math problems, and the brain area of interest has a percentage signal change of 58. From many previous studies with this same math problems procedure (but not listening to music), it is known that the signal change in this brain area is normally distributed with a mean of 35 and a standard deviation of 10. (a) Using the .01 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing, and illustrate your answer with a sketch showing the comparison distribution, the cutoff (or cutoffs), and the score of the sample on this distribution. (b) Then explain your answer to someone who has never had a course in statistics (but who is familiar with mean, standard deviation, and Zscores).
A cereal box is in the shape of a rectangular solid. The box is 10 inches long, 4 inches wide, and 15 inches. If cardboard costs $.0005 per square inches, find the cost of the cardboard to the nearest cent.
A ball drops from a height of 21 feet. Each time it hits the ground, it bounces up 80 percents of the height it fall. Assume it goes on forever, find the total distance it travels.
Rate of change occurs in a side of a triangle with respect to the change occurs in another side - Find the rate it is dropping?
Morris Leste, owner of Carlson Company, has three employees who earn $431, $503, and $738 per week. What are the total state and federal unemployment taxes that Morris owes for the first 12 weeks of the year and for week 30?
What is the probability of getting an A on the exam? What is the probability of getting an A in the course?
Programmers need to solve systems of equations, which often come up during the design of the games. As an example, suppose in a video game two persons (or objects) are traveling along linear paths
Determine the probability distribution's missing value. The probability that a tutor will see 0, 1, 2, 3, or 4 students x=px,0=4/27,1=1/27, 2=5/9, 3=?, 4=5/2
You are standing on a hotel balcony 30 feet up from the ground. You want to throw your key to someone standing outside the hotel on the ground. You throw it angled upward with an initial velocity of 55 ft/sec. Assume that the acceleration due to g..
Suppose that each of the players has a defined strength (all different), and the strongest player wins each match. then is it clear that the first prize goes to the strongest of all the players. what is the probability that the second prize goes t..
If a goat is tied on a 50 foot lead to a corner on the outside of a rectangular barn and the barn is 20 feet by 20 feet and the goat can not get into the barn nor is the barn a grazing area
the vertices of the trapezoid ar ethe origin along with A (4m, 4n), B (4q, 4n), and C (4p, 0). Find the midpoint of the midsegment of the trapezoid.
Find the future value of an ordinary annuity that has $270 monthly payments for 9 years if the account receives 3 3/4% interest.
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