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polet [3.4K]
3 years ago
11

Movie executives want to know if a movie watcher’s heart rate increases when they watch certain types of movies. Subjects in t

he experiment were given a free movie ticket and randomly assigned to watch one of four movies: an action-adventure film, a horror film, a romantic comedy, or an animated children’s film. They measured the average heart rate of all subjects while watching the assigned film.
Which of the following is the most appropriate statistical test to use to test if the average heart rate of the movie watchers was different for the four types of movies?

A. Matched pairs t-test

B. Chi-squared test for independence

C. ANOVA

D. Two-sample t-test

E. Inference for regression
Mathematics
1 answer:
Sedbober [7]3 years ago
5 0

Answer:

The correct option is C

Step-by-step explanation:

ANOVA is the correct option because it can be used to carry out comparison of average of more than  two groups  

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Cx =d+r solve for x .! pls explain
elena-14-01-66 [18.8K]

Answer: x=\frac{d+r}{c}

Step-by-step explanation:

Simply divide by c to isolate x.

\frac{cx}{c}=\frac{d+r}{c}

x=\frac{d+r}{c}

5 0
3 years ago
Find the length of side x to the nearest tenth.<br> 30°<br> 12<br> x<br> х<br> 60°
k0ka [10]

<u><em>Answer</em></u>:

13.9

<em><u>Step-by-step explanation:</u></em>

<em>Use the Pythagorean Theorem </em>

x=13.85 round to the nearest tenth 13.9

<em />

8 0
3 years ago
Consider the statement, "Confidence intervals are underutilized" and explain what the implications might be of using or not usin
nataly862011 [7]

Answer:

Step-by-step explanation:

Confidence intervals have been underutilized prior to this time.

The implications of not using confidence intervals include:

- The under-representation or over-representation of research results that amounts from the use of a single figure to represent a statistic.

- In Market Research analysis, neglecting the use of confidence intervals will increase the risk of your portfolio.

Implications/Importance of using confidence intervals include:

- Calculation of confidence interval gives additional information about the likely values of the statistic you are estimating.

- In the presentation and comprehension of results, confidence intervals give more accuracy from the data or metrics captured.

- Given a sample mean, confidence intervals show the likely range of values of the population mean.

6 0
3 years ago
Can u pls help me with this
BabaBlast [244]

Answer:

Problem 1:

x=12, x=3, x=6

Problem 2:

18*3=54

54/18=3

Problem 3:

Part A: 36/4.5=? 4.5*x=36

Part B: 8

Step-by-step explanation:

7 0
3 years ago
Hawick is 15 miles south of Abbotsford, and Kelso is 17 miles east of Abbotsford.
vazorg [7]
You are gonna use a^2 + b^2 = c^2 because the cities make a right triangle and you are trying to find the hypotenuse (c). C^2 ends up being 517 and the square root, your answer, is 22.7 miles
6 0
3 years ago
Read 2 more answers
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