Question
In: Statistics and Probability
Suppose a pilot study is conducted using data from 10 heavy ice-cream eating students who just...
Suppose a pilot study is conducted using data from 10 heavy ice-cream eating students who just bought four-scoop banana splits! There is a concern that eating too much ice cream could raise cholesterol levels into the “borderline high” range of more than 200 mg / 100 dl3. The study measures blood cholesterol levels on the 10 ice cream eaters with the following measurements: 189, 143, 258, 238, 229, 161, 278, 252, 220, 179 (a) Discuss assumptions and conditions for a 95% confidence interval. (b) Find the 95% confidence interval. (c) Interpret this interval in context. (d) Find the margin of error. (e) Can we say with 95% confidence that cholesterol levels of heavy ice cream users average more than 200 mg / dL?
Solutions
orchestra answered 1 year agoRelated Solutions
The following data are from a random sample of 10 students who participated in a study...
The following data are from a random sample of 10 students who
participated in a study undertaken to investigate the effect of
sleep time (measured in average number of hours of sleep per night)
on GPA (grade point average, measured on a 4-point scale).
Student
Sleep time
GPA
1
7
3.28
2
9
3.16
3
8
3.75
4
6
2.50
5
4
2.45
6
8
2.91
7
7
3.53
8
6
3.02
9
3
2.30
10
8
3.48
a. Find...
There are 10 ice creams. There are strawberry, coconut, matcha, and melon flavor. Suppose that each ice cream of the same flavor is indistinguishable from another.
There are 10 ice creams. There are strawberry, coconut, matcha, and melon flavor. Suppose that each ice cream of the same flavor is indistinguishable from another.
a. How many combinations are there such that there is at least 2 strawberry and at most 2 coconut ice cream?
b. How many combinations are there such that there is at least 2 strawberry, at most 2 coconut ice cream, and at least 1 matcha if someone 3 ice creams. (Hint: There...
suppose the market demand function for ice cream is Q^d = 10 - 2P and the...
suppose the market demand function for ice cream is Q^d = 10 -
2P and the market supply function for ice cream is Q^5 = 4P - 2,
both measured in millions of gallons of ice cream per year. Suppose
the government imposes a $0.50 tax on each gallon of ice cream
produced. The price received by sellers with the tax is?
a. 2.33
b. 1.50
c. 1.73
d. 1.83
MORE BENEFITS OF EATING ORGANIC Using data from a study, we find a significant difference in...
MORE BENEFITS OF EATING ORGANIC
Using data from a study, we find a significant difference in the
proportion of fruit flies surviving after 13 days between those
eating organic potatoes and those eating conventional (not organic)
potatoes. This exercise asks you to conduct a hypothesis test using
additional data from this study.1 In this case, we are
testing
H0:po=pcHa:po>pc
where po and pc represent the proportion of fruit flies alive at
the end of the given time frame of those...
MORE BENEFITS OF EATING ORGANIC Using data from a study, we find a significant difference in...
MORE BENEFITS OF EATING ORGANIC
Using data from a study, we find a significant difference in the
proportion of fruit flies surviving after 13 days between those
eating organic potatoes and those eating conventional (not organic)
potatoes. This exercise asks you to conduct a hypothesis test using
additional data from this study.1 In this case, we are
testing
H0:po=pcHa:po>pc
where po and pc represent the proportion of fruit flies alive at
the end of the given time frame of those...
. Using your data file Ice Cream, find: Temperature = Independent Variable; Sales = Dependent...
. Using your data file Ice Cream, find:
Temperature = Independent Variable; Sales = Dependent
variable
Temperature
Sales
63
1.52
70
1.68
73
1.80
75
2.05
80
2.36
82
2.25
85
2.68
88
2.90
90
3.14
91
3.06
92
3.24
75
1.92
98
3.40
100
3.28
92
3.17
87
2.83
84
2.58
88
2.86
80
2.26
82
2.14
76
1.98
a.
What is an appropriate null hypothesis for Regression Analysis?
b.
What is the test statistic (F)...
Suppose a study of n=269 students was conducted asking their weeknight study time. The mean response...
Suppose a study of n=269 students was conducted asking their
weeknight study time. The mean response was 137 min. with an
assumed KNOWN standard deviation of 65 min. The hypothesis of
interest is whether the mean study time is GREATER than 120
min.
What is the value of the test statistic?
Note: Enter X.XX AT LEAST ONE DIGIT BEFORE THE DECIMAL, TWO
AFTER and round up. Thus, 27 is entered as 27.00, 3.5 is entered as
3.50, 0.3750 is entered...
A study was conducted to determine if the students from the public universities take longer to...
A study was conducted to determine if the students from the
public universities
take longer to graduate than the students from the private
universities. 100
students from both the public universities and private universities
were
surveyed. Suppose that from the years of research, it was known
that the
population standard deviations were 1.58 years and 1 year
respectively. The
following data were collected. The public and private universities
students took
an average of 4.5 and 4.1 years respectively with a...
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted....
Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 8.818.81 hours of sleep, with a standard
deviation of 1.61.6 hours. Assume that the number of hours of sleep
for these visually impaired students is normally distributed.
(a) What is the probability that a visually impaired
student gets less...
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted.
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 8.82 hours of sleep, with a standard deviation of 2.12 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed.
(a) What is the probability that a visually impaired student gets...
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