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morpeh [17]
3 years ago
8

For the following study, indicate whether it is an observational study or an experiment. Explain your reasoning. If it is an obs

ervational study, give the population and the sample. If it is an experiment, give the explanatory variable and the response variable.
Just prior to Episode 1 of Games of Thrones Season 8, a research company randomly divided 1,000 of HBO subscribers and showed Episode 1 of Season 8 to half of them and showed Episode 1 of Season 1 of a new comedy show to the other half. They then asked everyone how excited they were about the final episode of Game of Thrones Season 8. They found that the group who saw Episode 1 of Game of Thrones Season 8 was more excited than those who saw Episode 1 of Season 1 of the new comedy show.
Mathematics
1 answer:
Savatey [412]3 years ago
6 0

Answer:

This study is an experiment

The response variable is the level of reaction (how excited they were) of the two groups after seeing their various shows and the explanatory variable are the two shows that was manipulated by the researchers.

Step-by-step explanation:

An observational study is a study where researchers collect data based on what is seen and heard and conclude based on the data collected. The researcher has no control over the variables, while an experiment is a method of applying treatments to a group and recording the effects of such treatments.

This study is an experiment because the researchers had control over the variables by manipulating the variables: showing Episode 1 of Season 8 to half of them and showing Episode 1 of Season 1 of a new comedy show to the other half. The response variable is the level of reaction (how excited they were) of the two groups after seeing their various shows and the explanatory variable are the two shows that was manipulated by the researchers.

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Evaluate expression for 18- ( 3/27) 3
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18 - (  \dfrac{3}{27}) ^3


= 18 - (  \dfrac{1}{9}) ^3


= 18 -   \dfrac{1}{729}

= 17\dfrac{728}{729}

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4 years ago
Trisha is planning her 13th birthday party. She has to choose a theme from these five options: the 70s, gothic, Arabian nights,
natulia [17]
Yes, <span>Trisha’s model a fair representation for choosing the theme</span> 

4 0
4 years ago
Read 2 more answers
I think it’s c but I could be wrong
Delvig [45]
Hello!

When trying to find the sine of an angle, we can use the following formula:

sin B = \frac{opposite}{hypotenuse}

In this case, we need to find the side opposite ∠B (which would be AC) and the hypotenuse (which would be BC). Now take the individual values of these two sides and insert them into the formula above:

sin B = \frac{(16)}{(17.46)}

Reduce the fraction above to reach a value of 0.92. We have now proven that the approximate value of sin B is 0.92

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I hope this helps!
3 0
3 years ago
A man invested a certain amount of money in two separate projects in the ration 3:2. His profit was calculated on interest rates
Aneli [31]

Answer:

100,000

Step-by-step explanation:

Investment ratio = 3 : 2

Rate = 5% and 4% simple interest

Total interest after 2 years = 9200

Let total investment = t

(3/5t * 0.05 * 2) + (2/5t * 0.04 * 2) = 9200

3/5t * 0.1 + 2/5t * 0.08 = 9200

0.06t + 0.032t = 9200

0.092t = 9200

t = 9200 / 0.092

t = 100,000

3 0
3 years ago
Sandra's printer can print 5 pages in 2/3 of a minute (40s). Show different ways to determine how many pages her printer can pri
Ne4ueva [31]

Answer:

7\frac{1}{2} pages

Step-by-step explanation:

Method 1: Working with minutes

Let us assume that, Sandra's printer can print x pages in 1 minute.

Then we can write the equation:

x:1=5:\frac{2}{3}

We can rewrite the ratios as a fraction.

\frac{x}{1}=\frac{5}{\frac{2}{3}}

This simplifies to

x=\frac{15}{2}

Or

x=7\frac{1}{2}

Method 2: Working with seconds

If 5 pages corresponds to 40 seconds, then we can write: 5:40

Let y corresponds to 60 seconds (1 minutes).

Then:

y:60=5:40

We rewrite as fraction:

\frac{y}{60}=\frac{5}{40}

Multiply both sides by:

y=\frac{5}{40}\times 60

y=\frac{300}{40}

y=\frac{15}{2}

y=7\frac{1}{2}

6 0
3 years ago
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