anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I was just going to tag u
anonymous
  • anonymous
lol
anonymous
  • anonymous
It is random it seems like haha :D

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anonymous
  • anonymous
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
anonymous
  • anonymous
I believe for this one, you just multiply 4*8 resulting in 32
anonymous
  • anonymous
If you choose a topping, you have 4 different choices for that one topping.
anonymous
  • anonymous
Since there are 8 toppings and there are 4 choices for each topping. 8*4 = 32
anonymous
  • anonymous
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
anonymous
  • anonymous
How many patients are there in all?
anonymous
  • anonymous
170
anonymous
  • anonymous
Ok, and how many patients are given a placebo?
anonymous
  • anonymous
50
anonymous
  • anonymous
Right! So 50 of the 170 patients are given a placebo.
anonymous
  • anonymous
So logically, this means that 120/170 patients are NOT given a placebo.
anonymous
  • anonymous
This will reduce to 12/17
anonymous
  • anonymous
ty i have a couple more
anonymous
  • anonymous
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?
anonymous
  • anonymous
Alright, I'll try. Don't be surprised if I don't know one of them. I haven't done stats in a while.
anonymous
  • anonymous
A: 1/4 B: 1/2 C: 1 D:3/4
anonymous
  • anonymous
its fine...
anonymous
  • anonymous
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. \[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }\]
anonymous
  • anonymous
A
anonymous
  • anonymous
\[\frac{ 1 }{ 2 } *\frac{ 1 }{ 2 } = \frac{ 1 }{ 4 }\]
anonymous
  • anonymous
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anonymous
  • anonymous
B?
anonymous
  • anonymous
So there are 6 possible places that the spinner can land. Of those 6 possible places, there are 4 dark spots.
anonymous
  • anonymous
2:4
anonymous
  • anonymous
It would actually be \[\frac{ 4 }{ 6 } = \frac{ 2 }{ 3 }\] Do you understand why?
anonymous
  • anonymous
yea cause theres 6 total 4 dark spots and you dived to get that
anonymous
  • anonymous
ohh it was A!
anonymous
  • anonymous
It should be 2 to 3
anonymous
  • anonymous
How did you get A?
anonymous
  • anonymous
idk it says that was the answer...
anonymous
  • anonymous
who knows man
anonymous
  • anonymous
OH!
anonymous
  • anonymous
There are simply twice as many dark spots as there are white spots. Therefore, 2 to 1 odds. haha.
anonymous
  • anonymous
Ohh haha .You think you could help with this?
1 Attachment
anonymous
  • anonymous
Or this one?
1 Attachment
anonymous
  • anonymous
For the second page its 1-3 with work...
anonymous
  • anonymous
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.
anonymous
  • anonymous
I gtg though man. It's pretty late. cya!
anonymous
  • anonymous
awwh could u help tmrw?

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