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A survey was conducted in Ohio on high school marijuana use. Of the 2266 high school students surveyed, 952 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students in Ohio who tried marijuana is now less than 45%. Use alpha = .01.
What is the standard error for this test?
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
If the average low temperature of a winter month in Rochester, NY, is 16° and the standard deviation is 4.6 then according to Chebyshev's theorem, the percentage of average low temperatures in Rochester, NY, between 2.2° and 29.8° is %.
That the requirement is NULL AND VOID. To be PROVED UNWORKABLE and sink like the Titanic? It is WORTH a little delay to have such a desirable result, isn"t it?
A company has 25 cars of this model. What is the probability that the mean nitrogen oxide emissions of these cars is above the 0.3g/mi limit?
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
the average income tax refund for 2009 tax year was 3095. assumes the refund per person follows the normal probability
article i chose httpwww.ncbi.nlm.nih.govpmcarticlespmc1516247pdfcalifmed00057-0028.pdffind an article on a web site
it is known that 800 patients received a certain drug and 75 of them reported and adverse event. construct a 99
Prepare tables of descriptive statistics (mean, median, Quartiles, IQR, and Standard Deviation) by firm for net profit margin (PROFITS). Discuss.
Examine relationship between GNP per capita and the percentage of respondents willing to pay more taxes. Create a table using the data below for the GNP per capita and the percentage willing to pay higher taxes.
Find the standard error of the difference in sample means,
when alternate optimal solutions exist in an lp problem thenthe problem will also be unboundedthe problem will also be
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