Let x denote the iq for an individual selected at random from a certain population. the value of x must be a whole number. suppose that the distribution of x can be approximated by a normal distribution with mean value 95 and standard deviation 15. approximate the probabilities below. (round all answers to four decimal places.)

(a) p(x = 95) =

incorrect: your answer is incorrect.

(b) p(x ? 105) =

(c) p(x < 105) = (hint: x < 105 is the same as x ? 104.)

(d) p(75 ? x ? 115) =

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.