Based on prior research, a wildlife researcher believes that the probability that a coyote carries fleas is XXXXXXXXXXShe would like to compute a confidence interval for the proportion of coyotes that...

Based on prior research, a wildlife researcher believes that the probability that a coyote carries fleas is 0.765. She would like to compute a confidence interval for the proportion of coyotes that have fleas in her particular area. She catches coyotes and checks them for fleas.

How many coyotes would she have to check to specify the proportion of coyotes with fleas to within ±0.042 with 90% confidence?