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A running coach wanted to see whether runners ran faster after eating spaghetti the night before. A group of six runners was randomly chosen for this study. Each ran a 5 kilometer race after having a normal dinner the night before, and then a week later, reran the same race after having a spaghetti dinner the night before. The times for their races are shown in the table below. What test value should be used in a t test for these dependent samples?
Runner 1 Runner 2 Runner 3 Runner 4 Runner 5 Runner 6Regular Dinner 1000 s 985 s 1009 s 970 s 1016 s 996 sSpaghetti Dinner 992 s 979 s 1005 s 968 s 1016 s 998 s
A) 3.80B) 0.80C) 1.55D) 1.96
Consider the data points (1,7),(2,5),(3,2), and (4,1). Find the straight line that provides the best least-squares fit to these data. the equation of the least-squares line is y=?
Construct a stem and leaf plot of the data.
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You determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. What percent of calories come from fat?
suppose a one-tailed test is being applied to find out if the population mean is less than 212. The level of significance is .01 and 26 accounts are sampled. What is the critical value?
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he distribution of ant mounds on a farm can be accurately modeled by a Poisson distribution.
The trough is full of water (density 1000 kg/m^3 ). Find the amount of work in joules required to empty the trough by pumping the water over the top. (Note: Use g=9.8 m/s^2 as the acceleration due to gravity.)
Determine the QR factorization of A. Use the QR factors in 1) to determine the lease squares solution to Ax=b. Ax=b is the solution related to Rx=Q^Tb
a rancher wishes to enclose a rectangular corral with 320 feet of fencing. the fencing only required 3 sides because of an existing wall. what are the dimensions of the corral of maximum area?
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