- chestercat

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- anonymous

yes?

- muscrat123

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

- anonymous

the new probability would be 6/8

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## More answers

- muscrat123

so D?

- anonymous

which is equal to....

- anonymous

yup D

- muscrat123

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%

- muscrat123

i dont know how to solve problems like this

- anonymous

do 4 over 10 * 7 over 10

- anonymous

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

- anonymous

28/100

- muscrat123

28%

- anonymous

yup

- muscrat123

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

- anonymous

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

- anonymous

I think

- anonymous

I am really not sure about this one

- anonymous

1/8

- muscrat123

but 13% isnt an option

- anonymous

1/8 is an option...

- muscrat123

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

- anonymous

|dw:1438870916332:dw|

- muscrat123

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

- anonymous

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

- anonymous

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

- anonymous

so it would be A

- anonymous

anymore questions?

- muscrat123

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

- anonymous

that's okay

- anonymous

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

- anonymous

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

- anonymous

to get 1/125

- anonymous

was the interview a DBA?

- muscrat123

b4 the interview yes

- anonymous

lol

- muscrat123

i had to do an actual interview though

- muscrat123

could u help with some more?

- anonymous

sure

- muscrat123

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

- anonymous

can you make the table a bit cleaner?

- anonymous

do 62+8+0

- anonymous

to get 70%

- anonymous

find 70% of 1,200

- anonymous

to get the answer: 840

- muscrat123

so the final answer is 840?

- anonymous

yup

- muscrat123

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

- anonymous

it is valid since he took a random sample

- muscrat123

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

- anonymous

median, since outliers don't affect medians so C

- muscrat123

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 ?

- muscrat123

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

- anonymous

D is correcct

- anonymous

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

- anonymous

oops Julia

- muscrat123

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

- anonymous

ooops

- anonymous

96% of 1,300

- anonymous

1248

- muscrat123

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

##### 1 Attachment

- muscrat123

group s?

- anonymous

I am not really sure...

- muscrat123

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?

- anonymous

try calculating the mean

- anonymous

of each

- muscrat123

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

##### 1 Attachment

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