Question
In: Statistics and Probability
Hypothesis Test - Made up problem: The population mean for hours of Netflix watched by individuals...
Hypothesis Test - Made up problem:
The population mean for hours of Netflix watched by individuals each week is less than 3. We spoke with seven random individuals and asked how many hours per week they watch Netflix. The results were 4, 0, 6, 2, 3, 3, and 6 hours in the last week. Test this hypothesis with a significance level of .05.
Solutions
orchestra answered 2 years agoRelated Solutions
The population mean number of hours a group watched TV was 10.5 with a standard deviation...
The population mean number of hours a group watched TV was 10.5
with a standard deviation of 3.6. A random sample of 36 individuals
from the group was selected and the number of hours each watched TV
was obtained. Consider the statistic the sample mean number of
hours the studied group of 36 watched TV.
Question 6 options:
12345678
Consider the statistic the sample mean number of hours the
studied group of 36 watched TV. What is the mean of...
Write a hypothesis test problem using the problem below. You believe that the population mean number...
Write a hypothesis test problem using the problem below.
You believe that the population mean number of times that adults
go to the gym each week is less than 2.5. You spoke with 10 people
and found that they went to the gym 2, 3, 5, 3, 0, 1, 7, 3, 0, and
3 times last week. You then would choose to test this hypothesis at
the .05 significance level. Assume a random sample.
Explain the following: Concepts of Hypothesis Testing Hypotheses Test for a population mean Hypothesis test for...
Explain the following:
Concepts of Hypothesis Testing
Hypotheses Test for a population mean
Hypothesis test for a population proportion
Test of normality
Chi-Square Test for Independence
Suppose you wish to perform a hypothesis test for a population mean. Suppose that the population...
Suppose you wish to perform a hypothesis test for a population
mean. Suppose that the population standard deviation is known, the
population distribution is Normal, and the sample is small. Would
you perform a z-test or t-test?
a.The z-test is appropriate.
b.Either test is appropriate.
c.The t-test is appropriate.
d.Neither test is appropriate.
In a test of the hypothesis that the population mean is smaller than 50, a random...
In a test of the hypothesis that the population mean is
smaller than 50, a random sample of 10 observations is selected
from the population and has a mean of 47.0 and a standard deviation
of 4.1. Assume this population is normal.
a) Set up the two hypotheses for this test. Make sure you write
them properly.
b) Check the assumptions that need to hold to perform this
hypothesis test.
c) Calculate the t-statistic associated with the sample.
d) Graphically...
In order to conduct a hypothesis test for the population mean, a random sample of 12...
In order to conduct a hypothesis test for the population mean, a
random sample of 12 observations is drawn from a normally
distributed population. The resulting sample mean and sample
standard deviation are calculated as 16.6 and 2.2,
respectively.
H0: μ ≤ 14.9 against
HA: μ > 14.9
a-1. Calculate the value of the test statistic.
(Round all intermediate calculations to at least 4 decimal
places and final answer to 3 decimal places.)
a-2. Find the
p-value.
0.05 p-value < 0.10...
In order to conduct a hypothesis test for the population mean, a random sample of 24...
In order to conduct a hypothesis test for the population mean, a
random sample of 24 observations is drawn from a normally
distributed population. The resulting sample mean and sample
standard deviation are calculated as 13.9 and 1.6, respectively.
(You may find it useful to reference the appropriate
table: z table or t
table).
H0: μ ≤ 13.0 against
HA: μ > 13.0
a-1. Calculate the value of the test statistic.
(Round all intermediate calculations to at least 4 decimal...
In order to conduct a hypothesis test for the population mean, a random sample of 24...
In order to conduct a hypothesis test for the population mean, a
random sample of 24 observations is drawn from a normally
distributed population. The resulting mean and the standard
deviation are calculated as 6.3 and 2.5, respectively. Use Table 2.
Use the critical value approach to conduct the following tests at α
= 0.05. H0: μ ≤ 5.1 against HA: μ > 5.1 a-1. Calculate the value
of the test statistic. (Round your answer to 2 decimal places.)
Test...
In order to conduct a hypothesis test for the population mean, a random sample of 24...
In order to conduct a hypothesis test for the population mean, a
random sample of 24 observations is drawn from a normally
distributed population. The resulting sample mean and sample
standard deviation are calculated as 13.9 and 1.6, respectively.
(You may find it useful to reference the appropriate
table: z table or t
table).
H0: μ ≤ 13.0 against
HA: μ > 13.0
a-1. Calculate the value of the test statistic.
(Round all intermediate calculations to at least 4 decimal...
A hypothesis will be used to test that a population mean equals 5 against the alternative...
A hypothesis will be used to test that a population mean equals
5 against the alternative that the population mean is less than 5
with unknown standard deviation. What is the critical value for the
test statistic T0 with alpha 0.01 and n=23. (use 3 decimal
places)
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