Question
In: Statistics and Probability
Do people find hairy spider more scary than non-hairy spiders? To find out, 20 people were...
-
Do people find hairy spider more scary than non-hairy spiders? To find out, 20 people were randomly assigned to two groups of 10. One group viewed hairy spiders and the other group viewed a very similar, but non-hairy, spider. Each person was asked to rate the spider she or he viewed on a scariness scale from 1 to 10 (with 10 being the most scary). The results were as follows:
Hairy Non-hairy 51 73 84 85 95 96 96 96
10 7 10 8
Note that the data is not normally distributed and the two populations are not related. Perform an appropriate hypothesis test to answer the question.
Solutions
orchestra answered 2 years agoRelated Solutions
Out of a survey of 20 people 3 people said they do not like the taste...
Out of a survey of 20 people 3 people said they do not like the
taste of cinnamon and 17 people said they liked the taste.
For this sample, complete the following:
a. Calculate the proportion who answered “yes” and the
proportion who answered “no.”
b. Calculate the 95% Confidence Interval for the proportion who
answered “yes.”
c. Using your survey results, test your hypothesis.
Show work for all steps including the formulas. Calculate the
p-value for the test. Use...
Do people under 40 defecate more than 3 times a day? I need to find a...
Do people under 40 defecate more than 3 times a day? I need to
find a proper hypothesis testing and I am unsure of what data to
actually use to construct the claim, NULL, ALT, SIGNIFICANCE LEVEL
and appropiate test statistics. (AGE/TIMES PER DAY)
40
4
43
1
42
2
70
1
66
3
27
2
69
4
70
1
47
3
48
1
43
2
28
2
37
6
20
1
20
0
39
5
24
5
21
3...
Jerome read that in temperate climes, there are more than 133 spiders per square meter of...
Jerome read that in temperate climes, there are more than 133
spiders per square meter of open land with a standard deviation of
4. To test this, he fenced off 31 square meters and carefully
counted all the spiders. He found an average of 134.22 spiders per
square meter. Which of the following correctly describes the test
and hypotheses he should use?
A. A z-test with H0:μ≤133, Ha:μ>133
B. A t-test with H0:μ≥133, Ha:μ<133
C. A t-test with H0:μ≤133, Ha:μ>133...
Jeremy wants to know if some scary movies are more frightening than others. He takes a...
Jeremy wants to know if some scary movies are more frightening
than others. He takes a group of students and randomly assigns them
to watch one of three popular scary movies (Jaws, Alien, or
Psycho), and counts the number of times each person screams during
the movie. Is there a significant difference in the number of
screams when comparing these movies? Set α = .05. Jaws Alien Psycho
∑▒〖X_1=〗 103 ∑▒〖X_2=〗 149 ∑▒〖X_3=〗 79 ∑▒〖X_1^2=〗 1162 ∑▒〖X_2^2=〗
2178 ∑▒〖X_3^2=〗 569...
Jeremy wants to know if some scary movies are more frightening than others. He takes a...
Jeremy wants to know if some scary movies are more frightening
than others. He takes a group of students and randomly assigns them
to watch one of three popular scary movies (Jaws, Alien, or
Psycho), and counts the number of times each person screams during
the movie. Is there a significant difference in the number of
screams when comparing these movies? Set α = .05.
Jaws
Alien
Psycho
X1= 103
X2= 149
X3= 79
X12= 1162
X22= 2178...
Consider the probability that more than 99 out of 159 people have not been in a...
Consider the probability that more than 99 out of 159 people
have not been in a car accident. Assume the probability that a
given person has not been in a car accident is 61%. Approximate the
probability using the normal distribution.
Why do some people crave drugs more than others?
Why do some people crave drugs more than others?
1.Consider the probability that no more than 1919 out of 157157 people have been in a...
1.Consider the probability that no more than 1919 out of 157157
people have been in a car accident. Assume the probability that a
given person has been in a car accident is 15%15%.
Approximate the probability using the normal distribution. Round
your answer to four decimal places.
2. Scores on a test have a mean of 78.878.8 and 77 percent of
the scores are above 8989. The scores have a distribution that is
approximately normal. Find the standard deviation. Round...
Consider the probability that more than 43 out of 130 people have been in a car...
Consider the probability that more than 43 out of 130 people
have been in a car accident. Assume the probability that a given
person has been in a car accident is 3%. Specify whether the normal
curve can be used as an approximation to the binomial probability
by verifying the necessary conditions.
Yes or No
A bomb explosion in the mall killed 20 people and injured more than 100 others. If...
A bomb explosion in the mall killed 20 people and injured more
than 100 others. If you are the Chief Risk Officer, how
will you handle this situation? Discuss your disaster risk
communication strategy and prepare a press kit.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- For Questions 1-3: consider the following code: public class A { private int number; protected String...
- You are tasked with assessing the health department’s intervention program in preventing recurrence of acute alcohol...
- Compare the MOSFET, JFET , and BJT and identify the reasons these devices behave differently. What...
- How would you use SAS Enterprise Miner to create a neural network model of your example?
- Explain the use of neural networking modeling in predictive analytics.
- Current Market Mix of Netflix, as detail as possible, please.
- This is all one question, thank you so much in advance! You must evaluate a proposal...
ADVERTISEMENT