Question

Based on the data in the two-way table, what is the probability that a person consumes 1,500 to 2,000 calories in a day?

A. 0.22

B. 0.28

C. 0.35

D. 0.50

Answer 1

D.

250 / 500 = 0.50

Answer 2

thank you. Mind helping me on another?

Answer 3

No, post it.

Answer 4

Based on the data in the two-way table, which statement is true?

A. P(consumes 1,000−1,500 calories|weight is 165) = P(consumes 1,000−1,500 calories)

B. P(weight is 120 lb.|consumes 2,000−2,500 calories) ≠ P(weight is 120 lb.)

C. P(weight is 165 lb.|consumes 1,000−2,000 calories) = P(weight is 165 lb.)

D. P(weight is 145 lb.|consumes 1,000−2,000 calories) = P(consumes 1,000−2,000 calories)

Answer 5

I would go with B.

Answer 6

but why is it that one?

Answer 7

there appear to be alot of 'given' statements .... P(this, given that)

Answer 8

lets review the first one:

P(consume 10-15, given that weigh is 165)

we see that the number of people that weigh 165, that consume 10-15 is: 15
and that the number of people that weigh 165 is 117

therefore the probability of the given is: 15/117
..........................

compare this to the statement P(eats 10-15)

we see that the number of people that eat 10-15 is 140
and that this is out of a total of 500 people

therefore the probability of 10-15 is given as 140/500

is it true that 15/117 = 140/500?

Answer 9

Nope. 15/117 equals a way different decimal than 140/500

Answer 10

its whatever. I'll just pick B and see what happens

Answer 11

then lets not pick that one :)

see if the second one holds

Answer 12

yeah B was the right answer xD

Answer 13

P(weight is 120 lb.|consumes 2,000−2,500 calories)

how many people consume 20-25? =n
how many people in that group are 120? =k

P(120|2,0−2,5) = k/n





≠ P(weight is 120 lb.)

how many people in total are 120? = a
and there are 500 surveyed

P(120) = a/500

Answer 14

that was the answer i guess lol

Answer 15

@sugahead12 You're welcome. That one just seemed the most reasonable. I tried out the rest and they didn't seem to make sense.

Answer 16

for the first one though i put D before and they said it was wrong smh

Answer 17

i'll see if its wrong again