Different groups of movies
How many different groups of movies can Kelly see over spring break if she will select a different movie to watch each of five days from a list of 12 movies showing at the theater?
A. 120
B. 792
C. 95040
D. 5
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What percent of the area under the normal curve is between z = 1.22 and z = 1.96?
The vertical component of the landing speed of a parachute is to be less than 20 ft/s. The total weight of the jumper and chute is 250 lb. Determine the minimum diameter of the open parachute.
Find a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6
The lift coefficient at this speed is 0.45 and the drag coefficient is 0.065. The mass of the aircraft is 900 kg. Calculate the lift area for the craft, and the requried engine thrust and power.
For the given chemical reaction, calculate the net effect due to changing from the standard state at 298 K to 2 bar and 400 K: delta Hrxn,298 =164.94 kJ/mo.
In a two-tailed hypothesis test for a mean the critical values were -1.83 and 1.83. If the test value of the mean is 1.67, what is the conclusion of the test?
The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean of $39,570 and a standard deviation of $798. About 65 percent of the incomes lie between what two incomes?
What is the minimum diameter wire that can be produced from a 5 mm initial diameter, annealed copper wire? (K=315 MPa; n=0.54)
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