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1. Assume the distribution is normal. Use the area of the normal curve to answer the question. Round to the nearest whole percent.
The average size of the fish in a lake is 11.4 inches, with a standard deviation of 3.2 inches. Find the probability of catching a fish longer than 17 inches.
2. A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the approximate number of bulbs that can be expected to last more than 400 hours.
3. Suppose 500 coins are tossed. Using the normal curve approximation to the binomial distribution, find the probability of 265 heads or more.
4. Solve the problem using the normal curve approximation to the binomial distribution.
A multiple choice test consists of 60 questions. Each question has 4 possible answers of which one is correct. If all answers are random guesses, estimate the probability of getting at least 20% correct.
Computer-generated output indicates that the p-value for the sample is 0.01. Carefully interpret this p-value. At what levels of significance would you reject the null hypothesis?
A financial adviser is interested in predicting bond yield based on bond terms, i.e., one year, two years, etc. What is the dependent variable?
if the endpoints of a confidence interval for the difference between a pair of treatment means are both positive
With a mean of 1/μ1 minutes for major language request and a mean of 1/μ2 minutes for minor language request. what is the probability that in the next hour a total of n service requests will arrive?
What is the probability that a simple random sample of automobile insurance policies will have a sample mean within 25 of the popluation mean.
To begin with, I have an example problem that asks to find a complete solution for: y'+ 2xy = x. The text says to multiply both sides by e^int a(x) dx
1. consider the following distribution of grades in a class.nbsp think of this as your population.3540 2 3 4 4 550 0 0
In his management information systems textbook, Professor David Kroenke raises an interesting point:“If 98% of our market has Internet access, do we have a responsibility to provide non-Internet materials to that other 2%?Suppose that 98% of the cust..
Weekly income of more than $429.35, the value of the standard deviation of the weekly earnings of the bus drivers is 15. is it true?
an electrical engineer has two boxes containing different types of resistors. the first box contains 3 resistors of one
what is differential analysis? what part does it play in making specific business decisions?
There are twelve months. Given the cohort of 100 which starts the program, about how many are left after twelve months?
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