The width of the confidence interval for a single proportion gets narrower (i.e., smaller) when:

A random sample of 100 bottles of water was collected.  From the sample, the mean ounces was calculated to be 16.91.  In addition, the sample standard deviation was calculated to be 0.12.  Which of the following is true about these values?

Which of the following values can be a probability?

The objective of statistical inference is to:

Suppose two sections of the same class take the same exam and produce the results shown in the following histograms.  Which section had a higher standard deviation on the exam and why?

The following scatter plot includes data on 51 lakes in Florida.  The variables being displayed are Alkalinity (concentration of calcium carbonate in mg/L) and AvgMercury (average mercury level for a sample of fish from each lake).    Which of the following choices is correct in terms of checking the conditions necessary to use the t-distribution for inference on the population slope?

The shape of the distribution of the house prices shown in this histogram is:

Those folks who never leave the U.S. last had a chance to see a total solar eclipse

2). Which of the following is easier to research?

To convert molecules to moles, you would divide by ___.