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A driver motor in a vcr draws 1 amp at 12v dc and is rated for 340 rpm. The motor is connected to a 1/2" diameter driver pulley of a belt drive, that connects to a 2" diameter output pulley. The output pulley is on the same shaft as the worm of a worm gear, which connects to a 30 tooth worm wheel. Determine the torque and speed of the driver pulley, the output pulley, and the worm wheel, neglecting all losses.
The company receives an order for 580 notepads, together with a check for $328. If the order fails to specify the number of each type, how should the company fill the order?
What is the p-value associated with the test of hypothesis you conducted?
Eve said to Adam, "If you give me one dollar, then we will have the same amount of money." Adam then replied, "Eve, if you give me one dollar I will have double the amount of money you are left with." How much does each have?
What is the probability that the mean of a random sample of size n = 4 of tire lifetimes will be less than 20,000 miles?
A manufacture has been selling 1500 television sets a week at 450 each. A market survey indicates that for each 29 rebate offered to a buyer, the number of sets sold will increase by 290 per week.
Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2-sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would..
A jar contains m+n tickets, numbered 1,2,...,n+m. A set of size n is drawn. If we let X be the number of tickets drawn, whose numbers exceed each of the numbers of those remaining, compute the probability mass function of X.
In a school of 300 students, 105 students are in the band, 175 students are on sports teams, and 45 participate in both activities. How many students do not participate in band or sports?
Let x represent the width of the original piece of cardboard. Determine a function V that represents the volume of the box in terms of X.
Two point charges q1 and q2 separated by a distance of 3m experience a mutual force of 16x10^-15N. Calculate the magnitude of charge when q1=q2=q. What will be magnitude of force if separation between the charges is changed to 6m?
Random variable and a probability distribution, Discuss the concepts of random variable and a probability distribution. A university found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 stude..
a radio transmission tower is 200 feet tall. How long should a guy wire be if it is to be attached 14 feet from the top and is to make an angle of 23 degrees with the ground?
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