Estimate the true proportion of home
A report states that 38% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 4% with 95% confidence?
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What is the purpose of having two t test? why not just be able to conduct a t test for either independent or matched?
Find the P-value obtained when testing the claim that p = 0.75 when given sample data resulting in a test statistic of z = 1.20.
Assume that the background niose X of a digital signal has a normal distribution with u=0 volts and theta = .5 volt. ifv we observe n=100 independent measurments of this noise, what is the probability that at least 7 of them exceed 0.98 in absolut
A study is to be conducted on the proportion of U.S. citizens who believe the minimum wage should be raised. What is the minimum number of people that should be included in the study if we want to estimate the true proportion with a margin of erro
Prove that the velocity induced region surrounding a doubly infinite vortex sheet of constant strength satisfies the equation of continuity everywhere.
The probability that a randomly selected pregnancy lasts less than 149 days is approximately .3821. The probability that the mean of a random sample of 21 pregnancies is less than 149 days is approximately .0846.
The correct detectin rate is the probability that if you have D, the test will say that you have D.Given that you test positive for D,what is theprobability tat yoactuallyhave itmany of the HMS exprts answered 0.95 and the average aswer was 0.56 s
A professor is doing a study of the relationship between students grades and their part-time work. He analyses data from a random sample of 15 college students. the number of hours worked per week and the grade-point averages of these students are
Obtain the sample mean and the sample standard deviation of each of the three samples.Obtain total sum of squares (SST,)treatment sum of squares (SSTR,)and error sum of squares (SSE)by using the defining formulas and verify that the one-way ANOVA
A statistics professor assigned various grades during the semester including a midterm exam (out of 100 points) and a logistic regression project (out of 30 points). The prediction equation below was fit, using data from 24 students in the class,
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