Question
In: Statistics and Probability
In a sample of 1000 Yuba College students, it was found that they consumed on average...
In a sample of 1000 Yuba College students, it was found that they consumed on average 23 grams of sugar with a standard deviation of 4 grams and that 230 planned to transfer to Chico State.
a) (7 points) Can we conclude with 99% confidence that Yuba College
students consume on average over 20 grams of sugar? Use the
rejection region approach.
b) Can we conclude with 99% confidence that under 25% of Yuba
College students plan to transfer to Chico State? Use the p-value
approach.
Solutions
orchestra answered 1 year agoRelated Solutions
In a sample of 1000 students, it was found that they consumed on average 23 grams...
In
a sample of 1000 students, it was found that they consumed on
average 23 grams of sugar with a standard deviation of 4 grams and
that 230 planned to transfer.
a) Can we conclude that with 99% confidence that students
consume on average over 20 grams of sugar? Use the rejection region
approach.
b) Can we conclude that with 99% confidence that under 25% of
students plan to transfer? Use the P-value approch.
Problem 4: In a sample of 1000 Yuba College students, it was found that they consumed...
Problem 4: In a sample of 1000 Yuba College students, it was
found that they consumed on
average 23 grams of sugar with a standard deviation of 4 grams and
that 230 planned to transfer
to Chico State.
a) (7 points) Can we conclude with 99% confidence that Yuba College
students consume on
average over 20 grams of sugar? Use the rejection region
approach.
(7 points) Can we conclude with 99% confidence that under 25% of
Yuba College students
plan...
If you draw a random sample of 1000 College Students and you find that the average...
If you draw a random sample of 1000 College Students and you
find that the average GPA of the students is 3.5 with a standard
deviation of 0.5, what is the distribution of the average GPA?
Someone argues that the average GPA of all college students is 2.5.
Does your sample support that? What is your 95% CI for the
population average?
A health journal found that 56.2% of college students who lived in coed dormitories consumed alcohol...
A health journal found that
56.2%
of college students who lived in coed dormitories consumed
alcohol weekly (compared with 26.5% who lived in single-sex
dormitories). A random sample of 175
students who live in coed dormitories was selected. Complete
part d below.
d. Identify the symmetric interval that
includes 95% of the sample proportions with a sample size of 175
if the true population proportion of students in coed dormitories
who consume alcohol weekly is 56.2%.
(%), (%)round to one...
A national study found that college students spend an average of 150 ( = 150) studying...
A national study found that college students spend an average of
150 ( = 150) studying during their first semester. A group of 41
AAMU students participated in The AAMU summer bridge students
studied an average of 146 hours (M = 146) during their first
semester. With a sum of squared deviations of 2,367 (SS – 2,367)
and a significance level of α = .01, did the summer bridge students
differ in the number of hours studied compared to college...
In a sample of 350 students selected from a large college of business, 25% are found...
In a sample of 350 students selected from a large college of
business, 25% are found to be marketing majors. The 25% is a
statistic.
True
False
Lily has been keeping track of what she spends to eat out. The
last week's expenditures for meals eaten out were $5.69, $5.95,
$6.19, $10.91, $7.49, $14.53, and $7.66. What is the mean amount
Lily spends on meals?
__________________
Monthly rent in dollars for a sample of 10 stores in a small
town...
In a sample of 350 students selected from a large college of business, 25% are found...
In a sample of 350 students selected from a large college of
business, 25% are found to be marketing majors. The 25% is a
statistic.
True
False
Lily has been keeping track of what she spends to eat out. The
last week's expenditures for meals eaten out were $5.69, $5.95,
$6.19, $10.91, $7.49, $14.53, and $7.66. What is the mean amount
Lily spends on meals?
__________________
Monthly rent in dollars for a sample of 10 stores in a small
town...
A sample of 1000 college students at NC State University were randomly selected for a survey....
A sample of 1000 college students at NC State University were
randomly selected for a survey. Among the survey participants, 108
students suggested that classes begin at 8 AM instead of 8:30 AM.
The sample proportion is 0.108.
What is the lower endpoint for the 90% confidence interval? Give
your answer to three decimal places.
(Note that due to the randomization of the questions, the
numbers in this question might be different from the previous
question.)
Answer:
According to a recent survey conducted at a local college, we found students spend an average...
According to a recent survey conducted at a local college, we
found students spend an average of 19.5 hours on their smartphone
per week, with a standard deviation of 3.5 hours. Assuming the data
follows the normal distribution.
a) How many percent of students in this college spend more than
15 hours on their smartphone per week?
b) If we randomly select 12 students, what is the probability
that the average of these students spending on the internet is more...
According to the College Board, undergraduate students spend on average more than $1000 per year on...
According to the College
Board, undergraduate students spend on average more than $1000 per
year on textbooks.* As a college student, you've
suffered the high prices of textbooks, and you're going to do
something about it! Let's say that after you graduate, you decide
to start your own textbook publishing company. You will need to
find a way to appeal to both professors and students with high
quality and reasonably-priced products, but you've also got to make
a profit.
Feel...
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