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The 10-lb block rests on a surface for which µk = 0.5 It is acted upon by a radial force of 2 lb and a horizontal force of 7 lb, always directed at 30° from the tangent to the path as shown. If the block is initially moving in a circular path with a speed v1 = 2 ft/s V at the instant the forces are applied, determine the time required before the tension in cord AB becomes 20 lb. Neglect the size of the block for the calculation.
What proportion of corks produced by this machine are defective - The specifications call for corks with diameters between 1.9 and 2.1 cm. A cork not meeting the specifications is considered defective.
Under new grading scale, how many students will have A's, B's, C's, D's and F's? Do you beleive the instructor must grade on a curve? Explain why or why not?
a food scientist wishes to study the effect of the type of pan and amount of sodium bicarbonate used in preparing
A medium-size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence.
Suppose a large sample is selected (instead of just 10). About 95 percent of the predictions regarding sales would occur between what two values? Determine the regression equation.
The manager of a service station is in the process of analyzing the number of times car owners change the oil in their cars. She believes that the average motorist changes his or her car's oil less frequently than recommended by the owner's manual (t..
A random sample of 52 groups gave a mean of $8.30 with a standard deviation of $2.42. Find a 90% confidence interval for the mean amount left by all groups.
Show how to generate a random variable from the exponential distribution function shown above. Show derivation of the equation.
height of men on a baseball team have a bell-shaped distribution with a mean of 179cm and a standard deviation of 6cm
Define the general principal of the mean. Define sample mean. What is the formula for the sample mean
What are the coefficients for the significant variables and using the intercept coefficient and only the significant variables, what is the equation?
in estimating the mean monthly fuel expenditure miu per household vehicle the u.s. energy information administration
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