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solong [7]
3 years ago
8

Determine whether the situation calls for a survey, an observational study, or an experiment.

Mathematics
1 answer:
grandymaker [24]3 years ago
3 0
Survey

By conducting a survey, you can ask people who have seen the new movie what they think about it. This will be the best approach to get a straightforward answer from these people.
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A herd of 1,500 steer was fed a special high‐protein grain for a month. A random sample of 29 were weighed and had gained an ave
Marianna [84]

By formula we know that:

z (x) = (x - m) / [sd / sqrt (n)]

where x is the value we want to know (6.7), m is the mean (5), sd is the standard deviation (7.1) and n is the sample size (29).

Replacing we have:

z (6.7) = (6.7 - 5) / [7.1 / sqrt (29)]

z = 1.289

If we look in the normal distribution table (attached), we have that the probability is 0.8997, therefore:

1 - 0.8897 = 0.1003

So the conditional probability of a herd sample earning at least 6.7 pounds per steer is 10.03%.

Now the hypothesis tells me:

m> 5

The probability is somewhat low, therefore, the most correct thing is to reject the hypothesis even though it is a fact that can occur.

4 0
3 years ago
Answer for a brainlist!!!!
Nitella [24]

Answer:

Market A

Step-by-step explanation:

MA) 28/12= 2.33333

MB) 23.75/10= 2.375

MC) 15.75/6=2.625

Market A has the best price per shrimp

6 0
3 years ago
31/x=248/320 <br><br> Solve for x
Nataly [62]

Answer:

X =(31×320)÷248

=9920÷248

X =40

7 0
4 years ago
Teresa graphs the following 33 equations: y=2xy=2x, y=x2+2y=x2+2, and y=2x2y=2x2. She says that the graph of y=2xy=2x will event
Neko [114]
The correct question is 
<span>Teresa graphs the following 3 equations: y=2x, y=x2+2, and y=2x2. She says that the graph of y=2x will eventually surpass both of the other graphs. Is Teresa correct? Why or why not?

we have that
y=2x
y=x</span>²+2
y=2x²

using a graph tool
see the attached figure

<span>We can affirm the following
</span>the three graphs present the same domain-----> the interval (-∞,∞)

The range of the graph y=2x  is the interval (-∞,∞)

The range of the graphs y=x²+2 and y=2x² is the interval [0,∞)

therefore
<span>Teresa is not correct because the graph of y = 2x will not surpass the other two graphs since in the interval of [0, infinite) the three graphs present the same range</span>

3 0
4 years ago
Really need help !!!!!!!!
Karo-lina-s [1.5K]
With what? You didn’t put a picture lol
3 0
3 years ago
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