.1 The table below shows he results ofan informal survey ofmiddle school student
ID: 3326736 • Letter: #
Question
.1 The table below shows he results ofan informal survey ofmiddle school students What is the probability of picking a student whose favorite snack is candy? Movie Theater of Snack Students Number about their favorite movie theater snack a. popcorn 53 b. What is the probability of picking a student who likes hot dogs or nachos? icee 14 hot dog 6 2. Texans are no strangers to snakes, especially during the summertime when many of them are out and about. Copperhead, Coral, Cottonmouth, and Rattler: these are the names given to the four species of venomous snakes in Texas. Copperheads account for 24% of Texas snakes, Coral about32%.cottonmouth a mere16%, and the rest are Rattle snakes. nachos 27 candy 49 If a snake is chosen at random in Texas, what is the probability that it will be a Rattler? a. b. If a snake is chosen at random, what is the probability that it will not be a Coral snake? c. If a snake is chosen at random, what is the probability that they will be a Copperhead or a Coral snake? d. If three snakes are chosen at random, what is the probability that they will all be Cottonmouths? If seven snakes are chosen at random, what is the probability that at least one of the snakes will be a Coral snake? e. SanplinsExplanation / Answer
(2)
Given percentages:
Copperhead = 24%
Coral = 37%
Cottonmouth = 16%
Rattler = 23%
(a)
Probability of snake being a Rattler = 0.23
(b)
Probability that snake is not Coral = 1-0.37 = 0.63
(c)
Probability of snake being Copperhead OR Coral = 0.24+0.37 = 0.61
(d)
Probability that all the three snakes are Cottonmouths = 0.16*0.16*0.16 = 0.0041
(e)
Probability that atleast one of the seven snakes is Coral = 1 - Probability that none of the seven snakes is Coral
Probability that none of the seven snakes is Coral = (1-0.37)^7 = 0.0393
So,
Probability that atleast one of the seven snakes is Coral = 1-0.0393 = 0.9607
Hope this helps !
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.