Variance of the random variable
We randomly choose letters, one at a time, without replacement, from the word CHOOSE until both Os have been obtained. What is the variance of the random variable? The answer should be 14/9.
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What is the probability the average of the sample is more than $37000 if a random sample of 75 house holds is taken?
When a charged particle moves at an angle of 13° with respect to a magnetic field, it experiences a magnetic force of magnitude F. At what angle (less than 90°) with respect to this field will this particle, moving at the same speed, exper
For the binomial distribution with the given values for n and p, state whether or not it is suitable to use the normal distribution as an approximation.
Test the claim that Sludge County has a pinworm infection rate that is greater than the national average. Use a 0.01 significance level.
The beginning work in process had materialscost of $2,040 and conversion costs of $1,550. The units in endinginventory were 40% complete. Materials are entered at the beginning of the painting process.
You claim that the average speed of cars going down a certain stretch of highway is 72 mph. After analyzing the data and performing a hypothesis test, you fail to reject the null hypothesis.
A positive 1.8 µC charge moves at a speed of 2.60 x 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge.
Suppose a linear programming (maximization) problem has been solved and the optimal value of the objective function is $300. Suppose a constraint is removed from this problem. Explain how this might affect each of the following:
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