Write the conclusion in context.

Researchers from a large community college in California are interested in understanding the demographics of students enrolled in their online classes.  The researchers collected the following data for the 2017/2018 school year. What does the data suggest about the relationship between sex and enrollment?

Write the null hypothesis for a test of homogeneity.

Using a 5% level of significance, should the researchers reject or not reject the null hypothesis?  Support or not support the alternative hypothesis?  Why?

The owner of a senior living facility examines data on the age of the residents at the facility.  She finds that the distribution of ages of residents is approximately normal with a mean of 69.5 years and a standard deviation of 11.5 years.  What is the Z-score for a resident who is 90 years old?

Write the alternative hypothesis that the neighbor is testing.

Calculate the sample proportion for the Minnesotans.  Show work.

Write the null hypothesis that the neighbor is testing.

Calculate the sample proportion for the Wisconsinites.  Show work.

Write the null hypothesis to test the claim that the proportions of Minnesotans and Wisconsinites who own at least 1 cat are different. Use pM and pW for your proportions.  If you can’t subscript, you can write pm and pw for your proportions.