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Test the claim that the proportion of men who own cats is smaller than the proportion of women who own cats at the .10 significance level. Let p_M and p_F be the proportion of Men and Women who own cats respectively.
Based on a sample of 80 men, 40% owned cats
Based on a sample of 80 women, 51% owned cats
What is the test statistic and the critical value? Reject or Fail to Reject Null hypothesis?
The mean monthly rent for a random sample of 10 apartments advertised in the local newspaper is $640. Assume that the standard deviation is $90. find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments ..
Using the results, describe the effect of an outlier or extreme value on the confidence interval.
The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
A college accepted 512 of the 1,600 applicants one year, and 520 of the 1,300 applicants the next year. Can we conclude that the admissions rate was higher the second year than the first year?
A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit to be .86. At the .05 significance level
a researcher reported a correlation of 1.25 between an iq test and grades in epy 6214. which one of the following
How does your sample compare to this theoretical distribution of sample means and what are the mean, variance, and standard deviation of the observations in your sample?
ann is waiting in line at the dmv. her waiting time is described by the random variable x in minutes with the following
calculate the samplenbspcovariancenbspbetween two variables x and y using the formulas described in lecture or
Is the dependent variable discrete or continuous? interval, or ratio) is used to measure the dependent variable?
southside hospital in bay shore new york commonly conducts stress tests to study the heart muscle after a person has a
one article describes measurements of ammonium concentrations in mgl at a large number of wells in the state of iowa.
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