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tamaranim1 [39]
4 years ago
6

You have been tasked to carry out a study assessing weight and exercise. You enroll 100 participants and weigh them all. You ran

domly assign a new exercise regimen to 50 of the participants and an alternative exercise regimen to the other 50. After 6 months all 100 are brought back to get reweighed. The study design that most best describes this study is:___________.
1. Experimental Case-Control
2. Retrospective
3. Cohort Cross-Sectional Prospective
4. Cohort Ecologic
Mathematics
1 answer:
stepladder [879]4 years ago
4 0
I think it is 1
Hope this helps have a great day!!:)
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cestrela7 [59]

Answer:


Step-by-step explanation:

<u>I would say your Answer:  Letter Choice, (C)     y     =    -| X      -      2 |   Most logical  answer to me looking at the graphs. </u>




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5 0
4 years ago
In probability does "then" mean addtition<br><br> e.x: P(orange marble then green marble)
LekaFEV [45]
Yes, If it were thAn, then it would be replacing. But in this case with that example, It means the green marble was added with the orange marble
5 0
4 years ago
Some STI’s can only be treated. which of the following is an STI they can be currently only treated not cured
ladessa [460]

Chlamydia – Chlamydia is a bacterial STD. It can often be treated with just a single round of antibiotics. Gonorrhea – Like chlamydia, gonorrhea is caused by bacteria that can usually be treated with antibiotics, however, there have recently been some cases of gonorrhea that are resistant to antibiotics.

5 0
3 years ago
Burning coal yields about 30 x 106 joules of energy per kilogram of coal burned, but only 30% of that energy goed into electrici
abruzzese [7]

Answer:

Number of bulbs which can be lit using 1 kg of coal = 9

Step-by-step explanation:

Energy yielded by burning 1 kg of coal = 30 × 106 joules

                                                                = 3180 joules

Amount of energy that can be used for electricity = 30 % of 3180 joules

                                                                                   = 0.30 × 3180

                                                                                    = 954 joules

Energy needed for lighting one bulb = Wattage of bulb × No. of hours of lighting

⇒ Energy needed for lighting one bulb = 100 × 1

                                                                  = 100 joules

\text{Now, Number of bulbs which can be lit for one hour = }\frac{954}{100}\\\\\implies\bf\textbf{Number of bulbs = }9.54\approx 9

Hence, Number of bulbs which can be lit using 1 kg of coal = 9

4 0
4 years ago
What is the volume of this pyramid
irga5000 [103]

Check the picture below.

\bf \textit{volume of a pyramid}\\\\ V=\cfrac{1}{3}Bh~~ \begin{cases} B=area~of\\ \qquad its~base\\ h=height\\[-0.5em] \hrulefill\\ B=\stackrel{\textit{triangular base}}{\frac{1}{2}(14)(18)}\\[1em] h=30 \end{cases}\implies V=\cfrac{1}{3}\left( \cfrac{1}{2}(14)(18) \right)(30) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill V=1260~\hfill

3 0
4 years ago
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