Question
In: Statistics and Probability
04.TR.A: I have several times heard HCC students who take classes at Laurel College Center advise...
04.TR.A: I have several times heard HCC students who take classes at Laurel College Center advise other students, “Buy your gas in Laurel. It’s cheaper.” As of 8 July 2019, prices in Columbia and Laurel for a gallon of gasoline (regular unleaded) are listed. Source: http://www.marylandgasprices.com/
Columbia: 2.51 2.65 2.69 2.69 2.71 2.84 2.85 2.89 2.95 2.99 2.99 2.99
Laurel: 2.55 2.62 2.65 2.67 2.69 2.69 2.72 2.74 2.74 2.75 2.75 2.99
(a) Find the five-number summary separately for both locations.
(b) Perform outlier tests on both locations.
(c) Construct boxplots on the same set of axes and label them with the five-number summary.
(d) Comment on the differences in the center and spread between the two boxplots.
(e) Find the mean and standard deviation for both locations.
(f) For each location, which is the better measure of center and spread?
(g) If you commute from HCC to LCC for classes, where will you buy your gas? Why did you make this choice?
04.TR.B: For the data in Exercise A,
(a) Construct histograms side by side for the two locations
(b) Construct stem and leaf plots for the two locations using the same stem and putting the leaves on opposite sides of the stems.
(c) Discuss relative advantages and disadvantages of a histogram, a stem and leaf plot and a boxplot for comparison of the two locations
Solutions
orchestra answered 2 years agoRelated Solutions
I have several times heard HCC students who take classes at Laurel College Center advise other...
I have several times heard HCC students who take classes at
Laurel College Center advise other students, “Buy your gas in
Laurel. It’s cheaper.” As of 8 July 2019, prices in Columbia and
Laurel for a gallon of gasoline (regular unleaded) are listed.
Source: http://www.marylandgasprices.com/
Columbia: 2.51 2.65 2.69 2.69 2.71 2.84 2.85 2.89
2.95 2.99 2.99 2.99
Laurel: 2.55 2.62 2.65 2.67 2.69 2.69
2.72 2.74 2.74 2.75 2.75 2.99
a) Find the mean and standard deviation for both...
04.TR.A: I have several times heard HCC st students who take classes at Laurel College Center...
04.TR.A:
I have several times heard HCC st
students who take classes at Laurel College Center advise other
students, “
Buy your gas in Laurel. It’s cheaper.”
As of 8 July 2019, prices in Columbia and Laurel for a gallon of
gasoline (regular
unleaded) are listed. Source:
http://www.marylandgasprices.com/
Columbia: 2.51 2.65 2.69 2.69
2.71 2.84 2.85 2.89 2.95 2.99
2.99 2.99
Laurel: 2.55 2.62 2.65 2.67 2.
69 2.69 2.72 2.74 2.74 2.75
2.75 2.99
(a) Find the five-number summary...
The average GPA of a random sample of 18 college students who take evening classes was...
The average GPA of a random sample of 18 college students who
take evening classes was calculated to be 2.94 with a standard
deviation of 0.04. The average GPA of a random sample of 12 college
students who take daytime classes was calculated to be 2.89 with a
standard deviation of 0.05. Test the claim that the mean GPA of
night students is larger than the mean GPA of day students at the
.01 significance level.
Claim: Select an answer...
The business college computing center wants to determine the proportion of business students who have laptop...
The business college computing center wants to determine the
proportion of business students who have laptop computers. If the
proportion exceeds 30%, then the lab will scale back a proposed
enlargement of its facilities. Suppose 250 business students were
randomly sampled and 75 have laptops. Test if the proportion
exceeds 30%. Use significant level alpha: 0.05 ( p value
Method)
The business college computing center wants to determine the proportion of business students who have personal...
The business college computing center wants to determine the
proportion of business students who have personal computers (PC's)
at home. If the proportion exceeds 35%, then the lab will scale
back a proposed enlargement of its facilities. Suppose 300 business
students were randomly sampled and 122 have PC's at home. Should
the college scale back on the proposed enlargement of its
facilities? Use alpha = .05.
a) Check the assumptions:
b) Hypotheses (State in symbols and in words): Ho:Ha:
c)...
The business college computing center wants to determine the proportion of business students who have personal...
The business college computing center wants to determine the
proportion of business students who have personal computers (PC's)
at home. If the proportion exceeds 35%, then the lab will scale
back a proposed enlargement of its facilities. Suppose 300 business
students were randomly sampled and 122 have PC's at home. Should
the college scale back on the proposed enlargement of its
facilities? Use alpha = .05.
a) Check the assumptions:
b) Hypotheses (State in symbols and in words): Ho:
Ha:...
I have heard students say in the past "I hope this teacher grades on a curve."...
I have heard students say in the past "I hope this teacher
grades on a curve." What do they mean by this? Is it beneficial to
you or not?
The times that college students spend studying per week have a distribution that is skewed to...
The times that college students spend studying per week have a
distribution that is skewed to the right with a mean of 7.0 hours
and a standard deviation of 2.4 hours. Find the probability that
the mean time spent studying per week for a random sample of 45
students would be
a. between 7.4 and 8.2 hours.
b. less than 7.4 hours
. Note 1: Round your z values to 2 decimal places before looking
them up in the table...
The times that college students spend studying per week have a distribution skewed to the right...
The times that college students spend studying per week have a
distribution skewed to the right with a mean of 8.3 hours and a
standard deviation 2.6 of hours. Find the probability that the mean
time spent studying per week for a random sample of 55 college
students would be a. between 7.6 and 8.4 hours. Round your answer
to two decimal places. b. less than 8.1 hours. Round your answer to
two decimal places.
THE ANSWERS ARE NOT .49...
The times that college students spend studying per week have a distribution skewed to the right...
The times that college students spend studying per week have a
distribution skewed to the right with a mean of 7.6 hours and a
standard deviation of 2.6 hours. Find the probability that the mean
time spent studying per week for a random sample of 45 college
students would be
a. between 7.0 and 7.9 hours.
Round your answer to two decimal places.
P=____
b. less than 7.3 hours.
Round your answer to two decimal places.
P=____
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Part A. Outline and explain all the VARIABLES and FACTORS that determine valuation and valuation analysis...
- Study the file polygon.h. It contains the header file for a class of regular polygons. Implement...
- what challenges can myths and stereotypes create for american indians?
- Date accuracy is very important because dates are used for discounts, payment terms and many reports....
- How many milliliters of concentrated hydrochloric acid solution (36.0% HCl by mass, density = 1.18 g/mL)...
- How does the rotating membership of the FOMC work? Why does the president of New York's...
- A gym owner is considering opening a location on the other side of town. The new...
ADVERTISEMENT