Question

MEDAL!

Question attached below.

Answer 1

@jim_thompson5910

Answer 2

Do you see what goes in the blank spaces on the spinner?

Answer 3

Not really. That's where I get confused on.

Answer 4

I just placed the numbers, but I am not sure if that's the correct way to do it or not.

Answer 5

what numbers are you placing

Answer 6

1,2,3,4,5
It says that there are "5 different numbers."

Answer 7

so you'll have a pair of each number

Answer 8

Oh so I would have two 1's, two 2's, two 3's, two 4's, two 5's to fill up the whole spinner?

Answer 9

yep

Answer 10

it also says "the probability of spinning each number is equal"

so P(1) = P(2) = P(3) = P(4) = P(5)

Answer 11

I don't get part a.

Answer 12

By how many sections, would it be two because each number filled up two segments of the spinner?

Answer 13

@jim_thompson5910

Answer 14

2, each number gets 2 slots

you already answered it and you didn't know/realize it

Answer 15

section = slot

Answer 16

Sorry, but what about "What number did Ms. Santos use..." would that mean by 1,2,3,4,5?

Answer 17

I think they meant to say "what numberS (plural) did she use"

Answer 18

that would be 1 through 5

Answer 19

For part b, for spinning each number, it would be 2/10 right (or 1/5).

Answer 20

@jim_thompson5910

Answer 21

that is correct

Answer 22

which is effectively the same as just having 5 slots (not 10) and landing on one number at a time

Answer 23

Sorry but I want to go through the whole sheet.

Answer 24

give it a shot and tell me what you get

Answer 25

Okay.

Answer 26

For c, would it be 15?

Answer 27

yeah you'll have 5*3 = 15 sections

Answer 28

D.
1. 2/25 = 2/5 = 0.4 = 40%
2. 8/10 = 4/5 = 0.8 = 80%

Answer 29

Based on her spin results, what numbers did she land on?

Answer 30

For 5, would the fraction be 6/25 (landing on five, six times)?

Answer 31

she landed on 5 six times, so: 5, 5, 5, 5, 5, 5

then she landed on 1 three times: 1, 1, 1

total outcomes: 5, 5, 5, 5, 5, 5, 1, 1, 1

Answer 32

focus on JUST this: 5, 5, 5, 5, 5, 5, 1, 1, 1

Answer 33

let's say we pick a number at random, what's the probability it's going to be a 5?

Answer 34

2/10 ?

Answer 35

focus on JUST this: 5, 5, 5, 5, 5, 5, 1, 1, 1

Answer 36

that's the outcome of her experiment (so to speak)

Answer 37

I don't get this.

Answer 38

The formula I know is:
number of favorable outcomes / total number of trials

Answer 39

The total number of trials, would it be 25?

Answer 40

that's for theoretical probability

Answer 41

they want experimental probability

Answer 42

hmm wait

Answer 43

But my math teacher put that theoretical is:
number of favorable outcomes / number of possible outcomes

Experimental:
number of favorable outcomes / total number of trials

Answer 44

there are 9 numbers in this list: 5, 5, 5, 5, 5, 5, 1, 1, 1

but she spun it 25 times

Answer 45

so did she land on other numbers? it seems like it

Answer 46

Was the directions for d, a completely separate question?

Answer 47

they all seem to be tied together

Answer 48

Sorry but going back to c, how would you separate the spinner so that it can be 15 segments?

Answer 49

hmm good question

Answer 50

it seems like it would be really hard to draw

Answer 51

do you have a protractor?

Answer 52

No

Answer 53

because the most accurate way do it is to divide 360 degrees into 15 equal parts

360/15 = 24

so each piece has a 24 degree angle

Answer 54

Okay we can go back to d now

Answer 55

Ok I think there are other outcomes instead of 5 and 1, correct?

Answer 56

maybe

Answer 57

ok so we have this set of outcomes

5, 5, 5, 5, 5, 5, 1, 1, 1

how many numbers are listed above?

Answer 58

9

Answer 59

Do u know how exactly to solve d?

Answer 60

Do u know how exactly to solve d?

Answer 61

so I'm thinking that 25 - 9 = 16 other numbers are landed on (2, 3, and 4)

if that's the case, then we have 6 occurrences of 5

which means

P(5) = 6/25

and we have three occurrences of 1, so

P(1) = 3/25

Answer 62

oh so I guess

P(not 1) = 1-P(1)

P(not 1) = 1-3/25

P(not 1) = 25/25 - 3/25

P(not 1) = 22/25