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Mars2501 [29]
3 years ago
7

A study of sleep patterns randomly selected participants in the study to sleep in either a dark room or a room with light. Which

element of experiment design is know to be a part of this study ?
Mathematics
2 answers:
kipiarov [429]3 years ago
6 0

The answer is randomization

TiliK225 [7]3 years ago
4 0

Answer:

The element of the experiment design that is known to be a part of this study is randomization.

Step-by-step explanation:

The study is about sleep patterns, so in order for the results to be accurate, the choice of which participants will sleep in the dark room or the room with light has to be random.

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In 2000, Florida's total population was 15,982,378 people and 183 out of every 1000 residents were 65 years and older. Determine
dmitriy555 [2]
Hello! There were 15,982,378 people living in Florida in 2000 and 183 out of 1,000 were ages 65 and over. That's 18.3% of all Florida residents, because 183/1,000 is 0.183 and 0.183 * 1,000 is 18.3. What you could do is multiply the amount of people living in Florida by the percentage, in this case, 18.3% (0.183). When you do that, you get 2,924,775.174 or 2,924,775 when rounded to the nearest whole number. Either way, you can't have part of a person. In the year 2000, there were 2,924,775 Florida residents 65 and older.
5 0
4 years ago
Anji bought 4 shirts for $56.80. She later bought a shirt for $19.20. What was the mean cost of all the shirts in dollars?
MakcuM [25]

Answer:

$15.20

Step-by-step explanation:

When you are asked to find the mean, you would add up the costs of the shirts and then divide them by however many shirts she got.

56.80 + 19.20 = 76

76 ÷ 5 = 15.20

Thus the mean cost is $15.20

<em>Hope this helped!</em>

7 0
3 years ago
an election called predicts that a certain writing 5 out of 8 voters who vote for the Liberal Party in the next provincial elect
baherus [9]
5 out of 8 would vote
3 out of 8 would not

3/8 = x/180 000
180 000/8 = 22 500
3*22 500 = 67 500
8*22 500 = 180 000

According to this production, 67 500 voters would not vote for the Liberal Party.
5 0
4 years ago
Marsha deposited $5,500 into a savings account 3 years ago. The simple interest rate is 2%. How
Genrish500 [490]

Answer:

the answer is 5,500,0.03,3,495 you’re welcome give me brainliest

Step-by-step explanation:

5 0
3 years ago
Last month your profit as a percentage of revenue was 10% and you made a profit of 23,224 what’s your total revenue
Svetlanka [38]

Answer:

232,240

Step-by-step explanation:

Profit = 10% of revenue

Profit = 23,224 which is 10% of revenue

Revenue = 23,224 divided by 10%

= 232,240

7 0
3 years ago
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