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Question: Batteries. In a group of 10 batteries, 3 are dead. You choose 2 batteries at random.
a) Create a probability model for the number of good batteries you get.
b) What's the expected number of good ones you get?
c) What's the standard deviation?
1. consider the following time series data.week 1 2 3 4 5 6value 18 13 16 11 17 14 using the naive method most recent
Complete row 3 of the table and find the mean for the random variable, "mu". Complete row 4 of the table and find both variance, and standard deviation
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
In one paragraph, reflect on what you have learned so far in this course. Determine the most interesting, unexpected, or useful piece of knowledge that you have learned. Provide a rationale for your response.
Given that the student selected is a social science major, what is the probability that she is also a sophomore? Write your responses as fractions.
A man ?res at a target six times; the probability of his hitting it each time is independent of other tries and is 0.40. What is the probability that he will hit at least once?
suppose n90000 n18000 s50a. compute the standard error of xbar using the finite population correction factor.b. repeat
Gamma Corporation is considering the installation of governors on cars driven by its sales staff. These devices would limit the car speeds to a preset level
Improperly filled orders are a costly problem for mail-order houses. To estimate the mean loss per incorrectly filled order, a large firm plans to sample n incorrectly filled orders and to determine the added cost associated with each one.
in order to determine the average weight of carry-on luggage by passengers in airplanes a sample of 16 pieces of
What is the slope of this equation? Write a sentence that interprets this slope in the context of this situation.- Predict the pulse rate after marching for somebody with a resting pulse rate of 50 beats per minute.
A pizza restaurant offers 11 different toppings: 6 of them are vegetarian and 5 of them are non-vegetarian. A customer selects her first topping at random and then selects another one at random from the remaining toppings. What is the probability ..
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