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Korvikt [17]
3 years ago
6

A tutoring company has offices where students physically attend a test prep course. The company recently created an online test

prep course, and they wonder if it produces similar or different outcomes than their in-person course. They recruit 50 students who are willing to try the online course. On average, those 50 students produced significantly better outcomes than students historically do in the in-person course. The company concludes that the online course produced better outcomes than the in-person course for these students. Which of these concerns makes their conclusion inappropriate?
Mathematics
1 answer:
alexandr402 [8]3 years ago
7 0

Answer:

Some of the 50 students should have been assigned to a control group that used the in-person course

Step-by-step explanation:

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Help please, question attached
Alexxandr [17]

Answer:

C. x = 8

Step-by-step explanation:

We know that x · x · x is equal to 512. We know it cannot be negative because then the 512 would be negative. -2 x -2 x -2 is -8. -2 x -2 is 4. We know it cannot be B x = -6 or D. x = -8.

Let's multiply 6 x 6 x 6.

                           36 x 6 = 216.

Let's multiply 8 x 8 x 8.

                          64 x 8 = 512

                               

The answer would be C. x = 8.

I hope that this helps! :)

4 0
3 years ago
Read 2 more answers
Please help ASAP !!15 points!!
DIA [1.3K]

Answer:

i got 48x as my answer if its wrong sorry

3 0
3 years ago
I don't know please help??
VikaD [51]
2%
take the absolute value of  your (experimental-accepted then divide by the accepted) so (20-25)/25=.2
then multiply that number by 100 to get the percent, .2*100=2
8 0
3 years ago
I bought a 5-kilogram can of peanuts for $4.50. What is the unit price?
aev [14]
4.50 ÷ 5 = 0.9

The unit price is $0.9 or ¢9.
8 0
3 years ago
(a) 26 is what percent of 40? 65% (b) 85% of 80 is what number?
Marizza181 [45]
A) 65%
b) 68

26:40 as x:100
26/40 = x/100
Cross multiply
2600 = 40x
x = 65
———————
85% of 80
0.85 is the decimal equivalent of 85%
80 x 0.85 = 68
6 0
3 years ago
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