Tomorrow is the Most Epic Pi Day Ever!

Not only is tomorrow Albert Einstein's birthday, it's the most epic pi day ever: 3/14/15 @ 9:26 and 53 seconds = 3.141592653!

To celebrate....how about some Stats homework?! :)

This weekend, please complete the chapter 20 reading questions provided in class (or below).

In addition, feel free to try out the extra credit homework I provided in class (or below).

• For each scenario, show the conditions, math, and interpret the interval!

Enjoy! See you all Monday! Be here!

Chapter 20 Reading Questions:

1.)    What is a p-value? (p. 452 and 457)

2.)    For a hypothesis test we write two hypothesis, one of which is the null hypothesis; how do we denote the null hypothesis and what is it? (p. 453 and 456)

3.)    Read the sections A Trial as a Hypothesis Test and What to Do with an “Innocent” Defendant. In the space below, outline this analogy to describe a hypothesis test (use bullet points). (p. 454-455).

4.)    A hypothesis test is a four step process. First, we must write our hypotheses, the null and the alternative hypothesis. Describe the alternative hypothesis. (p. 456)

5.)    What is the name of this test? (p. 457)

6.)    What is a two-sided alternative? A one-sided alternative? (p. 458)

7.)    Examine the “Step-by-Step” example on page 459-460 (or p. 463-464). Testing a hypothesis is a four step process. Describe, in your own words, the four step process for a hypothesis test. (Skip the “Plan” heading in blue; headings for the 4 steps follow in blue, starting with “Hypotheses.”).

8.)    Look at the yellow “TI Tips” box on page 461. What test are we going to use in our graphing calculator? We will have to enter 3 numbers in the calculator: what are these 3 numbers that we’ll have to enter?  

Extra Credit Homework: Show conditions, math, interpret the interval for 1,2

A survey of approximately 4,200 high school students in the Midwest (at a meeting of the American Public Health Association in Denver) showed that 19.8% of students were “hypertexters” and 11.5% were “hypernetworkers.” “Hypertexting” is defined as sending at least 120 messages per school day. While “hypernetworking” is defined as spending at least 3 hours per school day on social networking sites.

1.       Create a 90% confidence interval for the proportion of Midwest high school students who can be categorized as “hypertexters.”

2.       Create a 99% confidence interval to estimate the percent of Midwest high-school students who “hypernetwork.”