Question
In: Statistics and Probability
Use a hypothises test to determine if the proportions are statistically different. 1) A recent survey...
Use a hypothises test to determine if the proportions are statistically different.
1)
A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180
high school teachers, 36 were single. Is the proportion of high school teachers who were single greater than the
proportion of elementary teachers who were single? Use ΅ = 0.01.
Solutions
orchestra answered 2 years agoRelated Solutions
What does it mean for a hypothesis test to be statistically significant? How is this different...
What does it mean for a hypothesis test to be statistically
significant? How is this different from our everyday notions of
“significant”? Make sure that you respond to your classmates as
well.
Using the Chi-Square test for the difference between two proportions, determine (?=0.05) if there is a...
Using the Chi-Square test for the difference between two
proportions, determine (?=0.05) if there is a difference in
population proportion between male patients using Medicare as their
Payer versus female patients using Medicare as their Payer. Be sure
to set up the null and alternate hypotheses.
Using the Patients dataset, determine if there is a relationship
between length of stay and total charges. Your answer should
include the following:
Scatter Plot
Linear Regression Equation (with interpretation)
Coefficient of Determination (with...
A recent survey was conducted to determine how people consume their news. According to this survey,...
A recent survey was conducted to determine how people consume
their news. According to this survey, 60% of men preferred
getting their news from television. The survey also indicates that
42% of the sample consisted of males. Also, 42% of females
prefer getting their news from television. Use this information to
answer the following questions.
a. Consider that you have 30000 people, given the information
above, how many of them are male?
b. Again considering that you have 30000...
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies:...
Find the sample proportions and
test statistic for equal proportions.
(a-1)
Dissatisfied workers in two companies: x1 =
46, n1 = 100, x2 = 36,
n2 = 100, α = .05, two-tailed test.
(Round your answers to 4 decimal places. Use Excel to
calculate the p-value.)
p1
p2
zcalc
p-value
zα/2
+/-
(a-2)
Choose the appropriate
hypotheses.
a.
H0:π1 –
π2= 0 vs.
H1:π1 –
π2 ≠ 0. Reject H0 if
zcalc < –1.96 or zcalc...
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies:...
Find the sample proportions and test statistic for equal
proportions.
(a-1) Dissatisfied workers in two companies:
x1 = 44, n1 = 100,
x2 = 34, n2 = 100, α = .05,
two-tailed test. (Round your answers to 4 decimal places.
Use Excel to calculate the p-value.)
p1 =
p2 =
zcalc =
p-value =
zα/2 =
(a-2) Choose the appropriate hypotheses.
H0:π1 –
π2= 0 vs.
H1:π1 –
π2 ≠ 0. Reject H0 if
zcalc < –1.96 or zcalc
>...
A recent survey examined the use of social media platforms. Suppose the survey found that there...
A recent survey examined the use of social media platforms.
Suppose the survey found that there is a 0.61
probability that a randomly selected person will use Facebook and a
0.28 probability that a randomly selected person
will use LinkedIn. In addition, suppose there is a
0.26 probability that a randomly selected person
will use both Facebook and LinkedIn.
(a)
What is the probability that a randomly selected person will use
Facebook or LinkedIn?
(b)
What is the probability that...
You want to determine whether there is a statistically different average weekly sales between Sales Rep...
You want to determine whether there is a statistically different
average weekly sales between Sales Rep A and Sales Rep B.
* Create Null and Alternative Hypothesis statements that would
allow you to determine whether their sales performance is
statistically different or not.
* Use a significance level of .05 to conduct a t-test of
independent samples to compare the average weekly sales of the two
candidates.
* Calculate the p-value?
SAMPLE OF
WEEKLY SALES
Sales Rep
#
AverageWeekly
Sales($)...
Test of equal or given proportions: Use the “bacteria” data set to answer the question, “did...
Test of equal or given proportions: Use the “bacteria” data set
to answer the question, “did the drug treatment have a significant
effect of the presence of the bacteria compared with the
placebo?”
Please use R to answer this question.
It should be use In R studio. dataset is also in the R
Test of equal or given proportions: Use the “bacteria” data set to answer the question, “did...
Test of equal or given proportions: Use the “bacteria” data set
to answer the question, “did the drug treatment have a significant
effect of the presence of the bacteria compared with the
placebo?”
Please use R to answer this question.
It should be use In R studio. dataset is also in the R. it's
large to put here.
Just open R studio, view(bacteria).
1.) When the results of a hypothesis test are statistically significant what is the formal conclusion...
1.) When the results of a hypothesis test are statistically
significant what is the formal conclusion to the hypothesis
test?
a.) Accept the null hypothesis
b.) Fail to reject the null hypothesis
c.) Reject the alternative hypothesis
d.) Reject the null hypothesis and accept the alternative
hypothesis
2.) When the results of a hypothesis test are not statistically
significant what is the formal conclusion to the hypothesis
test?
a.) Accept the null hypothesis
b.) Fail to reject the null hypothesis...
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