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Alenkasestr [34]
3 years ago
15

Need help with this stuck on another problem

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
5 0

just remove perenthesis

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To study the effectiveness of vitamin C in preventing colds, a researcher recruited 200 volunteers. She randomly assigned 100 of
Paul [167]

Answer:

The claim made by the researcher lacks the validity on basis of reasons as indicated in the explanation.

Step-by-step explanation:

The claim made by the researcher is not valid on basis of following reasons:

  1. Interacting variables are not mapped accurately. The additional variables as the health status of the volunteers, eating and fitness habits are not considered in the consideration. This results in a in complete validation.
  2. The placebo effect is not catered accordingly. As the half of the volunteers are taking nothing, this is not the direct influence of the placebo and thus double-blinded testing for placebo effect is to be ensured in future experiments.
  3. The environmental effects are not considered as the effect under study is dependent on the environmental effects, thus the claim is biased and the generalization is not valid.
5 0
3 years ago
If f and g are functions, then (fog)(x) is always equal to (gof)(x)<br><br> true or false
valentina_108 [34]

Answer:

False

Step-by-step explanation:

Here is a counter example:

● f(x) = x^2

● g(x) = 3x

● (f○g)(x) = (3x)^2 = 9x^2 (1)

● (g○f)(x) = 3(x^2) = 3x^2 (2)

We can see that (1) and (2) aren't equal to each others.

4 0
3 years ago
Simplify the expression (y2)(y3)
jok3333 [9.3K]

Answer:

Step-by-step explanation:

Brainly spaces it weird so I'll put it here

5 0
3 years ago
A researcher finds a significant correlation between the amount of time spent watching television and blood pressure for a sampl
kobusy [5.1K]

Answer:

statement is false

Step-by-step explanation:

given data

men age = 4 year old

relation between = watching television and blood pressure

solution

we can say that this statement is wrong

because here causality it have never implied by correlation between these two watching television time period and the blood pressure as that by watching more time television that not causes high blood pressure

so that statement is false

8 0
3 years ago
Which list correctly orders the coefficients of the following terms from least to greatest?
nalin [4]

Answer:

−11y, −4z, w, 8x

Step-by-step explanation:

3 0
3 years ago
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