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The weight of the bags of fertilizer is normally distributed, with a mean of 45 pounds and a standard deviation of 5 pounds. What is the probability that a bag of fertilizer will weigh between 38 and 50 pounds?
a new cellular phone billing plan cost 15 per month plus 1 for each minute of use. if the number of minutes you use the
Write the null and alternative hypotheses. Identify which is the claim. A light bulb manufacturer claims that the mean life of a certain type of light bulb is less than 775 hours.
Sample mean of $14.68 per hour. Assuming the population standard deviation of σ = $145, can we conclude that an increase occurred in the mean hourly earnings since 2001? Use α = .05.
Determine the rejection region for the hypothesis Ho : mean D= 0 if H a : mean D > 0. Use a = 0.01. z>
a teacher gives a reading skills test to a third-grade class of n 25 at the beginning of the school year. to evaluate
Can you please derive the mean and variance of a RV X, which has a Poisson distribution.
What is the hospital's cost of capital assuming that the hospital has the following capital structure on its Statement of Financial Position.
What is the accounting equation? Suppose your company sold $12,000 in merchandise to a customer for cash. How does this transaction impact the accounting equation?
Suppose the budget has the support of 52% of the voters. What is the probability that the newspaper's sample will lead it to predict defeat?
Standard deviation of 12%. Assume that scores in both classes follow a normal distribution. Convert Maria's midterm score of 84 to a standard z score.
a random sample of 625 sat scores has a mean of 1500. assume that sat scores have a population standard deviation of
what are some other difference between test for independent groups and t test for matched groups? do they both use the
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