Question

You want to determine the number of text messages students at your school send in a month. You randomly ask students in each of your classes.
A.random
B.systematic
C.stratified
D.none of these

Answer 1

I was just going to tag u

Answer 2

lol

Answer 3

It is random it seems like haha :D

Answer 4

A yogurt shop offers 4 different flavors of frozen yogurt and 8 different toppings. How many choices are possible for a single serving of frozen yogurt with 1 topping?

32
16
64
1,680

Answer 5

I believe for this one, you just multiply 4*8 resulting in 32

Answer 6

If you choose a topping, you have 4 different choices for that one topping.

Answer 7

Since there are 8 toppings and there are 4 choices for each topping.
8*4 = 32

Answer 8

A drug trial is testing the effectiveness of two drugs. If 40 patients are given Drug A, 80 patients are given Drug B, and 50 patients are given a placebo, what is the probability that a patient will not be given a placebo? (1 point)

A:8/17
B:12/17
C:4/17
D:5/17

Answer 9

How many patients are there in all?

Answer 10

170

Answer 11

Ok, and how many patients are given a placebo?

Answer 12

50

Answer 13

Right! So 50 of the 170 patients are given a placebo.

Answer 14

So logically, this means that 120/170 patients are NOT given a placebo.

Answer 15

This will reduce to 12/17

Answer 16

ty i have a couple more

Answer 17

Suppose you flip a coin and roll a number cube. What is the probability of having tails come up on the coin and an even number on the number cube?

Answer 18

Alright, I'll try. Don't be surprised if I don't know one of them. I haven't done stats in a while.

Answer 19

A: 1/4
B: 1/2
C: 1
D:3/4

Answer 20

its fine...

Answer 21

Ok. So the probability of the coin being tails is
\[\frac{ 1 }{ 2 }\]
and the probability of the dice rolling an even number is also
\[\frac{ 1 }{ 2 }\]
All we have to do is multiply both of these probabilities together.
\[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }\]

Answer 22

A

Answer 23

\[\frac{ 1 }{ 2 } *\frac{ 1 }{ 2 } = \frac{ 1 }{ 4 }\]

Answer 24

B?

Answer 25

So there are 6 possible places that the spinner can land. Of those 6 possible places, there are 4 dark spots.

Answer 26

2:4

Answer 27

It would actually be
\[\frac{ 4 }{ 6 } = \frac{ 2 }{ 3 }\]

Do you understand why?

Answer 28

yea cause theres 6 total 4 dark spots and you dived to get that

Answer 29

ohh it was A!

Answer 30

It should be 2 to 3

Answer 31

How did you get A?

Answer 32

idk it says that was the answer...

Answer 33

who knows man

Answer 34

OH!

Answer 35

There are simply twice as many dark spots as there are white spots. Therefore, 2 to 1 odds. haha.

Answer 36

Ohh haha .You think you could help with this?

Answer 37

Or this one?

Answer 38

For the second page its 1-3 with work...

Answer 39

For the first one.
1.It wouldn't be representative of your school because you're only in one place. The gym at that.
2. Yes, the location could be somewhere where there is a more diverse group of students.
3. Your survey would obviously change because you are being biased. You are obviously judging the people who don't exercise negatively.

Idk, man most of this stuff is subjective. You kind of have to make it up as you go.

Answer 40

I gtg though man. It's pretty late. cya!

Answer 41

awwh could u help tmrw?