Driven by technological advances and financial pressures, the number of surgeries performed in physicians' offices nationwide has been increasing over the years. The function
a. Plot the graph of f in the viewing window
b. Prove that f is increasing on the interval [0, 15].
An MP3 manufacturer claimsthat 65% of teenagers 13 to 16 years old have their own MP3 players.
A researcher wishes to test the claim and selects a random sample of 80 teenagers. She finds that
57 have their own MP3 players. At � = 0.05, should the claim be rejected?
Consider a random sample of size n = 31, with sample mean
B. G. Cosmos, a scientist, believes that the probability is