Question
In: Statistics and Probability
a) State the null and alternative hypotheses, b) Verify that the requirements that allow use of...
a) State the null and alternative hypotheses, b) Verify that the requirements that allow use of the normal model to test the hypothesis are satisfied, c) Show work for calculating the test statistic, d) Compare the critical value with the test statistic, and e) State the conclusion.
The manufacturer of sprinkler systems designed for fire protection says that the mean activating temperature is 135oF. To test this claim, you randomly select a sample of 32 systems and find the mean activation temperature to be 133oF. The standard deviation is 3.3oF. Is there enough evidence to conclude that the mean activating temperature is less than 135oF? Use an α = 0.01level of significance.
Solutions
orchestra answered 2 years agoRelated Solutions
a) State the null and alternative hypotheses, b) Verify that the requirements that allow use of...
a) State the null and alternative hypotheses, b) Verify that the
requirements that allow use of the normal model to test the
hypothesis are satisfied, c) Show work for calculating the test
statistic, d) Compare the critical value with the test statistic,
and e) State the conclusion.
5% of children under 18 years of age have asthma. In a random
sample of 250 children under 18 years of age, 8% say they have
asthma. Is there enough evidence to conclude...
For the following problem: A) State the Null and Alternative hypotheses. B) Identify the type of...
For the following problem:
A) State the Null and Alternative hypotheses.
B) Identify the type of test (left tailed, Right Tailed, Two
tailed) and state the level of significance.
C) Calculate the p-value and make a decision to either
reject/not reject the null hypothesis.
D) Interpret your decision in the context of the problem.
In a random sample of 100 adult Americans who did not attend
college, 37 said they believe in extraterrestrials. In a random
sample of 100 adult...
a. Please state both the null and alternative hypotheses for this question. b. Provide the decision...
a. Please state both the null and alternative hypotheses for
this question. b. Provide the decision rule for making this
decision. Use an alpha level of .05. c. Show all the work necessary
to calculate the appropriate statistic. d. What conclusion are you
allowed to draw? Write a conclusions sentence in APA format (i.e.,
it includes the appropriate statistical information).
A professor wants to determine whether her department should
keep the requirement of college algebra as a prerequisite for an...
a. Please state both the null and alternative hypotheses for this question. b. Provide the decision...
a. Please state both the null and alternative hypotheses for
this question. b. Provide the decision rule for making this
decision. Use an alpha level of .05. c. Show all the work necessary
to calculate the appropriate statistic. d. What conclusion are you
allowed to draw? Write a conclusions sentence in APA format (i.e.,
it includes the appropriate statistical information).
A researcher is interested in whether a significant trend exists
regarding the popularity of certain work shifts among police
officers....
For each of the following: a) state the null and alternative hypotheses &n
For each of the following: a) state the null and
alternative hypotheses
b) state the type I & type II errors
c) state the consequences of each error
d) is one more serious? Explain.
1) You have created a new manufacturing method for
producing widgets which you claim will reduce the time necessary
for assembling the parts. Currently it takes 75 seconds to produce
a widget. The retooling of the plant for this change is very
expensive...
state all null and alternative hypotheses and use the appropriate test statistic. Please use Minitab and...
state all null and alternative hypotheses and use the
appropriate test statistic. Please use Minitab and show step by
step. Finally, draw your conclusions based on the Minitab
output
Capsule
Week
betacar
1
one
116
1
one
146
1
one
200
1
one
180
1
one
142
2
one
110
2
one
114
2
one
100
2
one
92
2
one
212
3
one
162
3
one
198
3
one
208
3
one
160
3
one
88
4
one
182...
_____ 24. State the null and alternative hypotheses. A study was conducted to determine if there...
_____ 24. State the null and alternative hypotheses. A study was
conducted to determine if there is a relationship between fan
preference of instant replay use and the sport in which it is
applied. The category counts of 102 fans are provided in the
two-way table below. Use a Chi-Square independence test to
determine if fan preference of instant replay use and the sport in
which it is applied are independent at the 5% level of
significance. State the null...
State the null and alternative hypotheses for each of the following situations. (That is, identify the...
State the null and alternative hypotheses for each of the
following situations. (That is, identify the correct number
μ0 and write H0:μ=μ0 and the appropriate
analogous expression for Ha.)
A. The average July
temperature in a region historically has been 74.5°F. Perhaps it is
higher now.
B. The average weight of a
female airline passenger with luggage was 145 pounds ten years ago.
The FAA believes it to be higher now.
C. The average stipend for
doctoral students in a particular discipline at...
state all null and alternative hypotheses and use the appropriate test statistic. Please use Minitab, show...
state all null and alternative hypotheses and use the
appropriate test statistic. Please use Minitab, show step by step.
Finally, draw your conclusions based on the Minitab
output.
The intake of high doses of beta-carotene in food substances has
been associated in some observational studies with a decreased
incidence of cancer. A clinical trial is being planned to compare
the incidence of cancer in a group of humans receiving
beta-carotene. Now there are four commercially available
beta-carotene capsules available on...
State the null and alternative hypotheses and mark the claim: A. The average income of nurses...
State the null and alternative hypotheses and mark the
claim:
A. The average income of nurses is at least $38725
B. The average electric bill is smaller than $68.32
C. The average price of a cd is $22.95
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