(01.01 MC) The mean number of hours spent per day on the computer, according to a national
survey, is six hours, with a standard deviation of 2.5 hours. If each time was increased
by 1.5 hours, what would be the new mean and standard deviation? (2 points)
O 6,2.5
0 7.5,4
O 6,4
0 7.5, 2.5

The probability that a u. s. resident has traveled to canada is 0.18 and to mexico is 0.09. a. if traveling to canada and traveling to mexico are independent events, what is the probability that a randomly-selected person has traveled to both? (page 109 in the book may ) b. it turns out that only 4% of u. s. residents have traveled to both countries. comparing this with your answer to part a, are the events independent? explain why or why not. (page 119 may ) c. using the %’s given, make a venn diagram to display this information. (don’t use your answer to part a.) d. using the conditional probability formula (page 114 in the book) and the %’s given, find the probability that a randomly-selected person has traveled to canada, if we know they have traveled to mexico.