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A poll of 1200 randomly selected community college students in the U.S. was conducted and found that 58% favor decriminalizing all drug use that is currently illegal. Would confidence in the results increase if the sample size were 3600 instead of 1200?
a sample of 230 observations is selected from a normal population for which the population standard deviation is known
three cards are randomly selected without replacement from a standard deck of 52 playing cards. compute the conditional
1.an experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield.
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
find the mean and standard deviation for the normal distribution where 50 of the data falls between 73.25 and 86.75.
Which of the following statements is true regarding the leverage of supply chain savings? Supply chain leverage is about the same for all industries.
The American Bankers Association collects data on the use of credit cards, debit cards, personal checks, and cash when consumers pay for in-store purchases (The Wall Street Journal, December 16, 2003). In 1999, the following usages were reported.
determine the sample size needed to construct a 95 confidence interval to estimate the population mean for the
Identify the null hypothesis, alternative hypothesis, test statistic, P-value and conclusion about the null hypothesis. Use the P-value method.
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
the following graph shows the population of washington d.c. in 2000 and in 2010. what is wrong with this graph? draw a
What are the assumptions that must be met for non-parametric statistics? What are the positives and the negatives of the chi-square test?
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