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3 years ago

Why is a sample of 1000 people better than a sample of 100 people?

Mathematics

2 answers:

ICE Princess25 [194]3 years ago

8 0

Answer:

The more people the more results you can factor into a situation. Like testing if you tested 100 there might be a low number of people testing positive but 1000 would be better as you'd have more tested positive and more info to look at if maybe a disease if gene related.

Genrish500 [490]3 years ago

8 0

Answer:

More diversity and you get a better data.

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Find the range of the data<br><br> 27,13,35,19,71,12,66,47,39

anastassius [24]

Answer:

Step-by-step explanation:

range = largest number - smallest number

7 0

3 years ago

Assume that you heat your home with a heat pump whose heat exchanger is at Tc=2∘C, and which maintains the baseboard radiators a

elena-14-01-66 [18.8K]

Answer:

$187.61

Step-by-step explanation:

Data provided:

Temperature of the heat exchanger, Tc = 2° C = 273 + 2 = 275 K

Temperature of the base board radiators , Th=47° C = 273 + 47 = 320 K

Cost of heating the house = $1000

Coefficient of performance of the heat pump = 75% = 0.75

Now,

Actual performance = 75% of performance of heat pump

Actual performance = 0.75 × $\frac{\textup{Th}}{\textup{Th-Tc}}$

Actual performance = 0.75 × $\frac{320 K}{320-275}$

Actual performance = 0.75 × $\frac{320}{45}$

Actual performance = 5.33

Therefore, the cost = $\frac{\textup{1000}}{\textup{5.33}}$

cost = $187.61

5 0

3 years ago

The RANGE of the function f is

monitta

Answer:

Step-by-step explanation:

The range of the function is what values of y from lowest to highest that are covered by the function. The domain are the values on the left: A-E; the range are the values on the right: 1-3. We state both domain and range in interval notation, stating only the lowest and highest values in either a set of brackets if the values are included, a set of parenthesis if the values are not included, or a mixture of both. Our range is inclusive, so we mention the lowest and the highest only: [1, 3].

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3 years ago

Combine like terms, need help ASAP

Serga [27]

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3 years ago

It's number 14 ! How much did Chris have left after the loan

aleksley [76]

7 1/2 - 1 1/4 = 7 2/4 - 1 1/4 = 6 1/4

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4 years ago