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Semmy [17]
3 years ago
11

You are working on an assignment for your statistics class. You need to estimate the proportion of students at your college who

delay taking their first math class for at least one year. Which sampling plan will produce the most reliable results
Mathematics
1 answer:
zmey [24]3 years ago
5 0

Answer:

A simple random technique used to choose let's say 100 students can be adopted

Step-by-step explanation:

Because it give each student equal opportunity of being selected to avoid bias

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The school wishes to purchase 2500 pens and have discovered that 3 stores sell the same model pen.Which store has the best buy ?
8_murik_8 [283]
Store\ A:  \frac{0.5}{15}=0.0333\ cents\ per\ pen \\  \\ Store\ B: \frac{1.7}{50}=0.034\ cents\ per\ pen \\  \\ Store\ C: \frac{0.9}{30} =0.03\ cents\ per\ pen \\  \\ Store\ C\ is\ the\ cheapest.
7 0
3 years ago
Simplify. -10m+2m^4-13m-20m^4
Ulleksa [173]
First one:

you can add -10m and -13m but you can't add -10m and 2m^4 becuase the powers aren't the same so

when adding the like terms
look at the:
powers, (x^3 adds with x^3)
placehloder letter (x adds with x and y adds with y and so on)

-10m+2m^4-13m-20m^4
powers: m^1 and M^4
placeholders: all m


add
-10m-13m+2m^4-20m^4
-23m-18m^4




second one:
when multiplying exponents, you add with like
so if you multipliy
x^2yz^3 times x^4y^2z^2 thne you would get x^6y^3z^5
when multiply with coeficients
2x^2yz^3 times 4x^4y^2z^2=8x^6y^3z^5
so using associative property a(bc)=(ab)c
2/3 times p^4 times y^3 times y^4 times s^5 times 6 times p^2 times s^3
group like terms

(2/3 times 6) times (p^4 times p^2) times (y^3 times y^4) times (s^5 times s^3)
(4) times (p^6) times (y^7) times (s^8)
4p^6y^7s^8

8 0
3 years ago
PLZZZZZZZZZZZZZZZZ HELP
Slav-nsk [51]

Answer:

The first box in the girl row is 18, the second one in the boy row is 8, and the bottom one is also 18.

Step-by-step explanation:

To get 81 to 9, you have to divide by 9, which means you have to do the same to 72. You get the ration 9 to 8, 9 being girls and 8 being guys. Then to get from 8 guys to 16, you have to multiply by 2, which means you do the same to 9 and get the answer of 18 girls. Hope this helps :)

5 0
3 years ago
What is the value of x?
PIT_PIT [208]

Step-by-step explanation:

can we have the final payment to be paid on Monday or Monday or Monday if that works better with the schedule for the

7 0
2 years ago
A family went out to eat at a restaurant. Their bill came to $64.20. They want to leave a 20% tip. How much will they leave as a
adelina 88 [10]

Answer:

$12.84

Step-by-step explanation:

calculator

8 0
2 years ago
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