Strunk and White, Chapter 2, details the following 7 rules.   Put statements in positive form. Use the active voice. Use definite, specific, concrete language. Omit needless words. Avoid a succession of loose sentences. Express coordinate ideas in similar form. Keep related words together How many of these 7 rules always result in a more concise paragraph (i.e., few words communicating the same ideas).   Enter an integer between 1 and 7.  

What is the point estimate for Pcoffee – Pnon-coffee, the difference in the true proportions of coffee drinkers and non-coffee drinkers who frequently have trouble sleeping? Round to two decimal places. 

This first section all refers to various section of Strunk and White 2020.

Often misused words:  The following sentence is correctly written.  In regard to your invitation, I would love to attend and bring a guest.  The phrase “In regard to” above is often misused/miswritten; please type that incorrect usage below (3 words).

Correctly recast this poorly-written sentence. The fact is that this exam is less difficult than I expected.

Sally was running late – please select the sentence below that is punctuated correctly around the quotation marks.  

Suppose we are helping to perform a significance test for each of the following situations.  State the null hypothesis Ho and the alternative hypothesis H1 in each case.  NOTE 1: Do not attempt to perform any statistical test.NOTE 2: Clearly indicate the two groups. Educational psychologists are interested in identifying characteristics that affect academic performance at a residential college. One variable investigated in their study was car ownership. It was hypothesized that car owners at residential colleges will have a lower grade-point average.

Using question 5, state the decision (reject the null & conclude the alternative, or do not reject the null) at the alpha level of 0.05. Be sure to state WHY.

Using question 34, state the decision (reject the null & conclude the alternative, or do not reject the null) at the alpha level of 0.01. Be sure to state WHY.

What is the critical value that was used to create this 95% confidence interval?