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const2013 [10]
3 years ago
7

Marcus wants to determine how age and weight are related to exercise preference in his town. He selects a simple random sample o

f 75 overweight individuals from
the 25- to 35-year age group and records their age, weight, and exercise preference (sports, Pilates/yoga, dancing, none). He also selects an independent simple

random sample of 50 normal weight individuals from the 40-to 50-year age group and records the same information. Which is the most important observation about

Marcus's plan?

-He should have selected the two age groups randomly instead of choosing them specifically

-He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight

-The plan is well conceived and should serve the intended purpose

-His samples are too small

-He should have used equal sample sizes
Mathematics
1 answer:
mario62 [17]3 years ago
3 0

Answer:

He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight

Step-by-step explanation:

age could be a factor to exercise as well as weight so both affect the outcome so he has two samples

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Please help reeeeeeeee
sdas [7]

Explanation with Answer:

2 with exponent 3= 8

8+4=12

3 with exponent 2=9

12*9=108

the ________ is a symbol for division.

2 with exponent 2=4

Now we divide. 108 divided by 4=27

The answer is D AKA 27.

8 0
3 years ago
Read 2 more answers
1) What is the solution to x - 5 = 27?
Phoenix [80]
X - 5 = 27

Isolate the x, add 5 to both sides (because of equal sign)

x - 5 = 27
x - 5 (+5) = 27 (+5)
x = 27 + 5
x = 32

x = 32 is your answer

hope this helps
3 0
3 years ago
Towns P,Q,R and S are shown. Q is 35 km due East of P S is 15km due West of P R is 15km due South of P Work out the bearing of R
Anni [7]

Answer:

Part A

The bearing of the point 'R' from 'S' is 225°

Part B

The bearing from R to Q is approximately 293.2°

Step-by-step explanation:

The location of the point 'Q' = 35 km due East of P

The location of the point 'S' = 15 km due West of P

The location of the 'R' = 15 km due south of 'P'

Part A

To work out the distance from 'R' to 'S', we note that the points 'R', 'S', and 'P' form a right triangle, therefore, given that the legs RP and SP are at right angles (point 'S' is due west and point 'R' is due south), we have that the side RS is the hypotenuse side and ∠RPS = 90° and given that \overline{RP} = \overline{SP}, the right triangle ΔRPS is an isosceles right triangle

∴ ∠PRS = ∠PSR = 45°

The bearing of the point 'R' from 'S' measured from the north of 'R' = 180° + 45° = 225°

Part B

∠PRQ = arctan(35/15) ≈ 66.8°

Therefore the bearing  from R to Q = 270 + 90 - 66.8 ≈ 293.2°

6 0
3 years ago
Please help!!
timofeeve [1]

Answer:

y = 2/3x

Step-by-step explanation:

So we know, when lines are perpendicular that they share the same slope. The slope in the equation of y = 2/3x + 7 is 2/3x. So, we have our slope. Now, we just need to find our b. We plug in the point that you gave us into the equation y = mx + b.

3 = 2/3(2) + b

we multiply the denominator 3 by 2, then divide that by the numerator 2.

3 = 3 + b

subtract 3 from itself and from the opposite side of the equal side 3.

0 = b

in the end, there is no b for this equation. Our answer is

y = 2/3x

6 0
3 years ago
Which measurement is equivalent to 1 pound?
DaniilM [7]

16 Ounces, I hope this helps, Mark me brainliest

6 0
2 years ago
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