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Battery recall
A company has discovered that a recent batch of batteries had manufacturing flaws, and has issued a recall. You have 10 batteries covered by the recall, and 3 are dead. You choose 2 batteries at random from your package of 10.
a) Has the assumption of independence been met? Explain.
b) Create a probability model for the number of good bat- teries chosen.
c) What's the expected number of good batteries?
d) What's the standard deviation?
The average burglary rate for a particular jurisdiction has been 311 per year with a standard deviation of 50. What is the likelihood that the number of burglaries in the next year is between 250 and 300?
Could this information be viewed as representing the ratio scale of measurement? If so, explain your reasoning. If not, why not?
an inspector inspects large truckloads of potatoes to determine the proportion in the shipment with major defects prior
Find an unbiased estimator of mp(1 - p)/n. Find the optimal estimator using the Rao-Blackwell Theorem.
the number of kernels of corn in a bag of microwave popcorn is 1262 with a standard deviation of 118 kernels.
past records at an appliance store show that 60 of the customers who look at appliances will buy one. what is the
Based on the empirical data determine the following probabilities:
Suppose that the average monthly pay for U. S. production worker is 2000$.Assume that available date indicate that production worker wages normally distributed with a standard deviation of 400$ .Suppose that a simple random sample of sides n=6..
The following data represent the amount of leakage of a ?uorescent dye from the bloodstream into the eye in patients with abnormal retinas:
Their monitoring plan will take a random sample of 5 days sales per month and use the sample mean sales to identify shops that are under-performing. Establish the lower limit sales such that only 5% of the shops would have a sample sales mean belo..
Given the following rating outcomes, determine if there exists a reasonably strong degree of agreement between the two judges.
a student has submitted a concrete cylinder to the strength contest in engineering open house. suppose the strength of
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