At an amusement park, the probability that a child eats popcorn and cotton candy is 0.48. The probability that a child eats popcorn is 0.79, and the probability that a child eats cotton candy is 0.83. What is the probability (rounded to the nearest hundredth) that a child eats cotton candy given that the child has already eaten popcorn?

0.38

0.58

0.40

0.61

What are the phase shift and period for the function y = 3cos[4( + 60)] 2?

Phase shift = right 60, period = 90

Phase shift = right 60, period = 90

Phase shift = left 60, period = 90

Phase shift = left 60, period = 90

A research firm conducts a sample survey and discovers that 80% of people are more afraid of spiders than they are of flying. If a sample questionnaire collecting these results had 670 respondents, what is the margin of error (ME), rounded to the nearest thousandth?

ME = 0.031

ME = 0.029

ME = 0.015

ME = 1.276