Question
In: Math
suppose the proportion of all college students who have used marijuana in the past 6months is...
suppose the proportion of all college students who have used
marijuana in the past 6months is p=0.40 in a class of 200 students
that are representative of all college students would it be unusual
for the proportion who have used marijuana in the past 6 months to
be less than 0.32? Explain how you made your decision in this
question
Solutions
milcah answered 1 month agoRelated Solutions
10. Suppose the proportion of all college students who have changed their major in the last...
10. Suppose the proportion of all college students who have
changed their major in the last two semesters is 60%. If a class of
200 students is considered. What is the probability that the
proportion of students who may change their major in the next 2
semesters are more than 115?
According to past data, the 15% of all college students in California are business majors. Suppose...
According to past data, the 15% of all college students in
California are business majors. Suppose a random sample of 200
California college students is taken.
a) What information about this sample allows us to use the
normal distribution for our sampling distribution?
b) Calculate the standard error. Round to two places for
ease.
c) What is the probability that the sample of 200 gives a sample
proportion of 18% or higher? Show your calculator function and
entries. Round to...
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to...
A presidential candidate's aide estimates that, among
all college students, the proportion p who intend to vote in the
upcoming election is at least 60%. If 118 out of a random sample of
225 college students expressed an intent to vote, can we reject the
aide's estimate at the 0.05 level of significance?
Perform a one-tailed test. Then fill in the table
below.
Carry your intermediate computations to at least three
decimal places and round your answers as specified in...
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to...
A presidential candidate's aide estimates that, among all
college students, the proportion p who intend to vote in the
upcoming election is at least 70%. If 158 out of a random sample of
235 college students expressed an intent to vote, can we reject the
aide's estimate at the 0.1 level of significance?Perform a
one-tailed test. Then fill in the table below.Carry your
intermediate computations to at least three decimal places and
round your answers as specified in the table....
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to...
A presidential candidate's aide estimates that, among all
college students, the proportion p who intend to vote in the
upcoming election is at most 75 % . If 217 out of a random sample
of 270 college students expressed an intent to vote, can the aide's
estimate be rejected at the 0.05 level of significance? Perform a
one-tailed test. Then fill in the table below.
Null Hypothesis
Alternative Hypothesis
type of test statistic
Value of the test statistic
the critical...
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)...
A sociologist wishes to estimate the proportion of parents of college-bound high school students who have...
A sociologist wishes to estimate the proportion of parents of
college-bound high school students who have not saved any money for
college. What sample size would she need for the estimate to be
correct within 6 percentage points with 95% confidence
(a) if she uses a similar study from 2015 that indicates that 32%
of parents had saved no money for college?
(b) if she does not use any prior estimates?
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:...
10% of all college students volunteer their time. Is the percentage of college students who are...
10% of all college students volunteer their time. Is the
percentage of college students who are volunteers smaller for
students receiving financial aid? Of the 339 randomly selected
students who receive financial aid, 17 of them volunteered their
time. What can be concluded at the αα = 0.01 level of
significance?
For this study, we should use Select an answer t-test for a
population mean z-test for a population proportion
The null and alternative hypotheses would be:
H0:H0: ? p...
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