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It is known that a vaccine like the ones from the different pharmaceutical companies for Covid may cause fever as side effect after one gets the shot. The proportion P of those who suffer side effect is to be estimated. A simple random sample of 913 individuals were examined and it was found the 153 suffered the side effect. Compute 95 percent confidence interval for P. How did you arrive to your response?
The probability of a 1 on the first toss is 1/6. What is the probability that the first toss is not a 1 and the second toss is a 1?
The Energy Information Administration wishes to estimate the mean price per gallon of regular unleaded gasoline. Assume that a random sample of 49 filling
Given an infinite population with a mean of 75 and a standard deviation of 12, the probability that the mean of a sample of 36 observations, taken at random from this population
The critical values are values of the test statistics that separate the rejection region from the non rejection region. Is this true? Explain answer.
We consider a waiting system with a single server and finite capacity c = 3, in which the customers arrive according to a Poisson process with rate λ and the service times are independent exponential random variables with parameter μ = 2λ.
40% of all households with children have a pet. A household is chosen at random. Find the probability of that household
What is the odds ratio of cancer in town A compared to town B? Which is the better measure of association in this study? Why?
Find the random variable X. Consider we are testing "paired samples" - What is the test statistic (t-value) ? Assume, the population mean of the differences
To estimate the percent of district voters who oppose a certain ballot measure, a survey organization takes a random sample of 200 voters from a district.
Explain how the margin of error is reported in the article, and how and why the margin of error impacts the results of the study.
An electronic company is about to launch a new product.if the serial number for each piece produced has the following format:LLNNN where L stands for any letter in English and N is a number from 0 to 9,what is the name of the counting rules used t..
Can a we use a chi square to test for a relationship between these two variables? why or why not?
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