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nydimaria [60]
3 years ago
9

A leading medical journal has claimed that 71% of roller coaster rides get extreme anxiety just before the ride begins. A popula

r theme park wants to conducts a survey to verify this the patrons in their park and wants to do so with a margin of error of +8%. What minimum sample size, rounded to the nearest whole person, would the theme park need to use?
A. N ≥ 129
B. N ≥ 118
C. N ≥ 150
D. N ≥ 75
Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

Answer:

A

Step-by-step explanation:

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Can someone show me how to solve 8=n + 3 over -2
Gennadij [26K]

Answer:

n=-19

Step-by-step explanation:

You have to multiply each side by -2. This cancels out the division. Then you subtract 3 from both sides. Then you get the answer. Hope this helps!

5 0
3 years ago
Select the correct answer.
Sati [7]

The given quadratic equation gives the parameters of the shape of the

graph of the equation.

  • The graph that is most likely associated with the model is; <u>graph B</u>

Reasons:

The given function is <u>n(t) = -2.82·t² + 25.74·t + 60.87</u>

by analyzing the above function, we have;

At t = 0

n(0) = -2.82 × 0² + 25.74 × 0 + 60.87 = 60.87

  • The x-coordinate of the maximum point is given by \displaystyle x = -\frac{b}{2 \cdot a}

Which gives;

\displaystyle t = -\frac{25.74}{2 \times (-2.82)} \approx 4.564

The maximum value of the function is therefore;

n(4.564) = -2.82 × 4.564² + 25.74 × 4.564 + 60.87 ≈ 119.61

The characteristics of the equation are;

Initial value of equation = 60.87

t-coordinate of the maximum point, t ≈ 4.564

Maximum value of the of the function = 119.61

By comparing with the given graphs, we have;

  • \begin{tabular}{c|c|c|}&Graph A&Graph B\\Initial value&100&75\\t-value at max point&7&4\\Maximum value&200&125\end{array}\right]

Therefore, the graph that will most likely be associated with the model is; <u>graph </u><u><em>B</em></u>.

Learn more about graphs of quadratic equations here:

brainly.com/question/10989920

4 0
2 years ago
Find the volume of the rectangular prisim 18 in 10 in 5 in
Fiesta28 [93]

Answer:

900m^3

Step-by-step explanation:

Volume is found when you multiply length by height by width.

So, in this case, 18 times 10 times 5.

18*10*5=180*5=900

So, 900m^3 is the answer

Hope this helped! :)

7 0
3 years ago
Which question(s) could be answered by collecting data that has variability? Click on each statistical question. To change an an
gulaghasi [49]

Answer:

What proportion of the voters want a new city park?

How many people own snow blowers in Boston?

On average, how old are the cats that live in Kyle's neighborhood?

Step-by-step explanation:

How many people are in Mr. Moore's geometry class? & What was the temperature in the school lunchroom at noon today? do not have variables like the other questions and do not change depending on something else.

6 0
3 years ago
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Refer to the figure to answer the following.
MaRussiya [10]

Answer:

True

Step-by-step explanation:

∠BFG is an interior angle, then:

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4 0
3 years ago
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