Question

@heretohelpalways

Answer 1

yes?

Answer 2

Maggie has 7 tiles with pictures of plants and 2 tiles with pictures of animals. Maggie keeps all the tiles on a mat with the pictures hidden and mixes them up. She then turns one tile face up and finds the picture of a plant on it. She removes this tile from the mat and turns over another tile without looking. What is the probability that the second tile that Maggie turns over has a plant on it?

22.2%
28.6%
65.0%
75.0%


i think it may be A

Answer 3

the new probability would be 6/8

Answer 4

so D?

Answer 5

which is equal to....

Answer 6

yup D

Answer 7

Ben has a 40% chance of being selected as the president of the school sports club and a 70% chance of being elected editor of the school magazine.

What is the probability that Ben will be selected as the president of the sports club and will also be elected editor of the school magazine?

0.3%
1.1%
14%
28%

Answer 8

i dont know how to solve problems like this

Answer 9

do 4 over 10 * 7 over 10

Answer 10

\[\frac{ 4 }{ 10 }*\frac{ 7 }{ 10 }\]

Answer 11

28/100

Answer 12

28%

Answer 13

yup

Answer 14

Max tossed a fair coin 3 times. What is the probability of getting heads in the first two trials and tails in the last trial?

4 over 8
3 over 8
2 over 8
1 over 8

Answer 15

do \[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }\]

Answer 16

I think

Answer 17

I am really not sure about this one

Answer 18

1/8

Answer 19

but 13% isnt an option

Answer 20

1/8 is an option...

Answer 21

oh we are talking about the most recent question. i thought we were talking about the plant question

Answer 22

At a game booth, a student gets a box of candy as the prize for winning a game. The boxes come in four colors: white, red, green, and blue. There are 10 boxes of each color. All the boxes are equally likely to be given away as prizes. Which expression shows the probability of the first winner receiving a white box and the second winner also receiving a box of the same color?

10 over 40 multiplied by 9 over 39
10 over 40 multiplied by 10 over 39
10 over 40 plus 9 over 39
10 over 40 plus 10 over 39

Answer 23

you must NOT add these fractions, so that should eliminate 2 answer

Answer 24

and a white box was taken out leaving the probability of a white box to be chosen 9/39

Answer 25

so it would be A

Answer 26

anymore questions?

Answer 27

sorry it took a while to respond - had to do an interview for flvs


A box has 5 beads of the same size, but all are different colors. Tina draws a bead randomly from the box, notes its color, and then puts the bead back in the box. She repeats this 3 times. What is the probability that Tina would pick a red bead on the first draw, then a green bead, and finally a red bead again?

1 over 625
1 over 180
1 over 150
1 over 125


@heretohelpalways

Answer 28

that's okay

Answer 29

\frac{ 1 }{ 5 }*\frac{ 1 }{ 5 }*\frac{ 1 }{ 5 }

Answer 30

do 1/5*1/5*1/5

Answer 31

to get 1/125

Answer 32

was the interview a DBA?

Answer 33

b4 the interview yes

Answer 34

lol

Answer 35

i had to do an actual interview though

Answer 36

could u help with some more?

Answer 37

sure

Answer 38

The following table shows the data collected from a random sample of 100 middle school students on the number of hours they play outdoor games every week:Weekly Duration of Outdoor Games

Time (in hours) 0–2 3–5 6–8 9–11
Number of Students 30 62 8 0

There are 1,200 students in the school. Based on the sample proportion, how many students in the school would be expected to play outdoor games for at least three hours every week?
744
840
960
1,104

Answer 39

can you make the table a bit cleaner?

Answer 40

do 62+8+0

Answer 41

to get 70%

Answer 42

find 70% of 1,200

Answer 43

to get the answer: 840

Answer 44

so the final answer is 840?

Answer 45

yup

Answer 46

Jack wants to know how many families in his small neighborhood of 60 homes would help organize a neighborhood fund-raising party. He put all the addresses in a bag and drew a random sample of 30 addresses. He then asked those families if they would help organize the fund-raising party. He found that 12% of the families would help organize the party. He claims that 12% of the neighborhood families would be expected to help organize the party. Is this a valid inference?

No, this is not a valid inference because he asked only 30 families
No, this is not a valid inference because he did not take a random sample of the neighborhood
Yes, this is a valid inference because he took a random sample of the neighborhood
Yes, this is a valid inference because the 30 families speak for the whole neighborhood

Answer 47

it is valid since he took a random sample

Answer 48

The price of some jewelry sets in a store are shown below:


Store Price
A $110,000
B $100,000
C $1,110,000
D $130,000
E $120,000


Based on the data, should the mean or the median be used to make an inference about the price of the jewelry sets in the store?
Mean, because it is in the center of the data
Median, because it is in the center of the data
Median, because there is an outlier that affects the mean
Mean, because there are no outliers that affect the mean

@heretohelpalways

Answer 49

median, since outliers don't affect medians so C

Answer 50

Noah wants to predict who will be selected as the sixth-grade treasurer for student council. Which of the following groups should Noah survey to make his prediction?

The first 100 students from an alphabetical list of the entire school
The first 100 students from an alphabetical list of sixth graders
One hundred random students from the entire school
One hundred random students from the sixth grade

D correct @heretohelpalways ?

Answer 51

and also:

Four students did a survey to find the pizza topping sixth-grade students prefer. The table below shows the method each student used to conduct the survey:


Student Method
Troy Asked 100 students at random from his seventh-grade class what their favorite pizza topping is
Dacia Asked 100 eighth-grade students at random what their favorite pizza topping is
Julia Asked 100 sixth-grade students at random what their favorite pizza topping is
Tanner Asked 100 third-grade students at random what their favorite pizza topping is


Which student's survey is most likely not biased?
Troy
Dacia
Julia
Tanner

Answer 52

D is correcct

Answer 53

and JUlia is not biased because she is the only one who asked sixth graders

Answer 54

oops Julia

Answer 55

The following table shows the data collected from a random sample of 100 middle school students on the number of hours they play indoor games every week:

Weekly Duration of Indoor Games

Time (in hours) 0–3 4–7 8–11 12–15
Number of Students 4 42 52 2


There are 1,300 students in the school. Based on the sample proportion, how many students in the school would be expected to play indoor games for at least four hours every week?
546
598
702
1,248
\
@heretohelpalways

Answer 56

ooops

Answer 57

96% of 1,300

Answer 58

1248

Answer 59

The dot plot below shows the amount of time two random groups of students took to brush their teeth:
Based on visual inspection of the dot plots, which of the following groups, if any, shows a greater average time required to brush their teeth?

Group R
Group S
Both groups show about the same average time.
No conclusion about average time can be made from the data.


@heretohelpalways

Answer 60

group s?

Answer 61

I am not really sure...

Answer 62

The price of some jewelry sets in a store are shown below:


Store Price
A $110,000
B $100,000
C $1,110,000
D $130,000
E $120,000


Based on the data, should the mean or the median be used to make an inference about the price of the jewelry sets in the store?
Mean, because it is in the center of the data
Median, because it is in the center of the data
Median, because there is an outlier that affects the mean
Mean, because there are no outliers that affect the mean

C?

Answer 63

try calculating the mean

Answer 64

of each

Answer 65

The price of some jewelry sets in a store are shown below:


Store Price
A $110,000
B $100,000
C $1,110,000
D $130,000
E $120,000


Based on the data, should the mean or the median be used to make an inference about the price of the jewelry sets in the store?
Mean, because it is in the center of the data
Median, because it is in the center of the data
Median, because there is an outlier that affects the mean
Mean, because there are no outliers that affect the mean

C?


and document.rtf is a different question