Conditions Explain why it is not safe to use the methods

Chapter , Problem R10.6

(choose chapter or problem)

Conditions Explain why it is not safe to use the methods of this chapter to perform inference in each of the following settings. (a) Lyme disease is spread in the northeastern United States by infected ticks. The ticks are infected mainly by feeding on mice, so more mice result in more infected ticks. The mouse population in turn rises and falls with the abundance of acorns, their favored food. Experimenters studied two similar forest areas in a year when the acorn crop failed. They added hundreds of thousands of acorns to one area to imitate an abundant acorn crop, while leaving the other area untouched. The next spring, 54 of the 72 mice trapped in the first area were in breeding condition, versus 10 of the 17 mice trapped in the second area.50 (b) Who texts moremales or females? For their final project, a group of AP Statistics students investigated their belief that females text more than males. They asked a random sample of 31 students15 males and 16 femalesfrom their school to record the number of text messages sent and received over a two-day period. Boxplots of their data are shown below. Females Number of text messages in 2-day period 0 34 107 191 379 0 100 200 300 400 Males 0 6 28 83 127 213 214 s Use two-sample t procedures to compare two means from raw data

Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.

Becoming a subscriber
Or look for another answer

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back