Question
In: Statistics and Probability
A researcher in aquaculture (fish farming) is interested in whether fish fed on minnows or fish...
A researcher in aquaculture (fish farming) is interested in whether fish fed on minnows or fish raised on food pellets gain weight faster. A number of fish are randomly assigned to being fed minnows or food pellets. Assume that the data is normally distributed. Sample data is as follows: Sample A (minnows): Mean weight = 3.5 lbs s = 0.5 lbs. n = 25 Sample B (pellets): Mean weight = 2.9 lbs s = 0.4 lbs n = 25 Perform a hypothesis test at 95% confidence, to determine whether the two populations grow at the same rate. To get full credit, state your null and alternate hypotheses, show your test statistic, show your critical region, and state your conclusion: do fish raised on minnows grow equally fast as fish raised on pellets? YES or NO
Solutions
orchestra answered 1 year agoRelated Solutions
Supreme Fish is a company involved in fish farming in Vietnam. Its products are sold to...
Supreme Fish is a company involved in fish farming in Vietnam.
Its products are sold to supermarkets as well as restaurants
throughout the world. Supreme Fish has a global market share of 40%
for this type of fish. Supreme Fish has a US$150 million, 15 year
bond issued 2 years ago. The bond pays a premium of 500 basis
points over the SOFR. The bond is not rated. However, based on its
yield, an equivalent rating would be BB. An...
A fisherman is interested in whether the distribution of fish caught in Green Valley Lake is...
A fisherman is interested in whether the distribution of fish
caught in Green Valley Lake is the same as the distribution of fish
caught in Echo Lake. Of the 385 randomly selected fish caught in
Green Valley Lake, 206 were rainbow trout, 67 were other trout, 45
were bass, and 67 were catfish. Of the 519 randomly selected fish
caught in Echo Lake, 248 were rainbow trout, 108 were other trout,
81 were bass, and 82 were catfish. Conduct the...
A researcher is interested in whether or not there is a difference in student’s performance based...
A researcher is interested in whether or not there is a
difference in student’s performance based on the study methods they
use. Participants are assigned one of three different study methods
(read the text and re-read it, read and answer prepared questions,
and read then create your own questions). There are 6 people in
each group and the researcher measures the participants’
performance on a test. Perform a hypothesis test and show all four
steps. Hints: Use a two tailed...
A family researcher is interested whether there is an association between the number of siblings a...
A family researcher is interested whether there is an
association between the number of siblings a person has and the
number of children they have. She interviews six older adults and
finds the following information.
Number of Siblings
Number of Children
0
1
1
1
2
1
2
0
3
3
4
3
Mean Number of Siblings = 2
Mean Number of Children = 1.5
Standard Deviation = 2
Standard Deviation = 1.5
Explain which variable more naturally plays the...
A researcher is interested in determining whether there is a correlation between number of packs of...
A researcher is interested in determining whether there is a
correlation between number of packs of cigarettes smoked
# packs of cigarettes smoked (X)
(Y)
0
80
0
70
1
72
1
70
2
68
2
65
3
69
3
60
4
58
4
55
day and longevity (in years). n=10.
A researcher is interested in determining whether the new design of the training simulator and a...
A researcher is interested in determining whether the new design
of the training simulator and a new behavior modification program
will affect a student’s learning behavior. Sixty-three (63)
students are randomly selected for inclusion in this research
project. The students are randomly divided into 9 groups of 7. The
group assignments are as follows:
Design A
Design B
Design C
No behavior modification
12
18
21
10
16
22
19
27
33
19
23
35
15
26
27
18
22...
A researcher is interested in determining whether there is a relationship between the weekly number of...
A researcher is interested in determining whether there is a
relationship between the weekly number of room air-conditioning
units sold and the time of year. What type of descriptive chart
would be most useful in performing this analysis? Explain your
choice.
Assume that a researcher is interested in testing whether there is a significant effect of video...
Assume that a researcher is interested in testing whether there
is a significant effect of video game playing on teenagers’
visual-spatial abilities. The researcher randomly selects 4
participants and measures their visual-spatial cognition before and
after playing video games for 4 hours a day for a week.*SHOW WORK
FOR THIS PROBLEM.
a. Use the data in the table below to conduct the appropriate
statistical test including all of the necessary steps. Assume α =
.10.
Participant
Xbefore
Xafter
A
85...
A researcher is interested in whether the number of years of formal education is related to...
A researcher is interested in whether the number of years of
formal education is related to a person's decision to never smoke,
continue to smoke, or quit smoking cigarettes. The data below
represent the smoking status by level of education for residents of
the United States 18 years or older from a random sample of 350
residents. Round all numeric answers to four decimal places.
Smoking Status Education Level Current Former Never Less than high
school 46 12 26 High...
A researcher is interested in determining whether there is a correlation between number of packs of...
A researcher is
interested in determining whether there is a correlation between
number of packs of cigarettes smoked per day and longevity (in
years). n=10.
Longevity
# packs of cigarettes smoked (X)
(Y)
0
80
0
70
1
72
1
70
2
68
2
65
3
69
3
60
4
58
4
55
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