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GFCI devices are set to trip a ground fault current above _____________.

A fluorescent lamp has to have __________ to work.

Suppose that you wanted to estimate the population mean amount spent on snacks purchased at vending machines. In 2010, a survey found the sample standard deviation was 15 dollars. What size sample would you need to collect in order to make a 95% confidence interval with a margin of error of 2.25 dollars?

A group of 100 students were asked whether or not they owned a pet.  Is the population proportion of underclassmen(1) who own a pet different from the proportion of upperclassmen(2) who  own a pet? What would be the correct alternative hypothesis?

A student conducted a test to see if people preferred one of two possible new logos for UF, one with orange lettering and one with blue lettering. Thirty randomly selected students were asked which one they preferred. Twelve preferred the logo with the blue lettering.   How can a confidence interval for the population proportion be computed for this example?

In 2010, the General Social Survey had a question that asked participants if they had access to Internet in their own home. Out of 712 respondents, 527 said yes. What is the point estimate of the population proportion that said that they had access to the internet in their own home?

A scientist was interested in determining if the Paleo diet plan worked.  They randomly selected 4 people that were interested in trying a new diet plan. They recorded their initial weights before starting the diet plan. After six weeks, their weight was taken again. How would you check the assumptions of Normality for this test?     1 2 3 4 Initial weight 160 177 132 197 Weight six weeks later 172 157 124 190

Have people changed their opinion about badminton in the United States in the past decade? The same 1000 people were asked if they favored playing badminton in 2000 and in 2010. The initial 1000 people were randomly selected from the United States. What would be the correct alternative hypothesis? (Let 2000 be group 1 and 2010 be group 2.) 

In 2015, the mean income of all adults living in Arkansas was 42798. The standard deviation was 6,250. Suppose that a sample of 50 participants is taken. What would be mean and standard error of the sampling distribution of the sample mean?

Do University of Florida students study more than 5 hours a day? A random sample of 150 students were asked how many hours they studied during a 24 hour period. The sample mean was 5.4 hours while the standard deviation was 1.2. What is the test statistic?