Question

Consider the following hypothesis test for the mean of a
normally distributed population: *H**o**:
μ=80.* A random sample of size 40 is to be taken. The
population standard deviation is 20. Write the rejection rule using
critical value method; use *α=4%.* Please clearly identify
the test-statistic (t or z or F etc).

Answer #1

Consider the following hypothesis test for the mean of a
normally distributed population: Ho: μ=80. A random sample of size
40 is to be taken. The population standard deviation is 20. Write
the rejection rule using critical value method; use α=4%. Please
clearly identify the test-statistic (t or z or F etc).

#5. Consider the following
hypothesis test for the mean of a normally distributed population:
Ho: μ=80. A random sample of size 40 is
to be taken. The population standard deviation is 20. Write the
rejection rule using critical value method; use α=4%.
Please clearly identify the test-statistic (t or z or F etc).(15
points)

1. Consider the following hypothesis test: Ho : μ = 15 H1 : μ ≠
15 A sample of 50 provided a sample mean of 15.15. The population
standard deviation is 3. a. Compute the value of the test
statistic. b. What is the p value? c. At α = 0.05, what is the
rejection rule using the critical value? What is your
conclusion?
2. Consider the following hypothesis test: Ho: μ ≤ 51 H1: μ >
51 A sample...

1. Consider the following hypothesis test: Ho: μ = 15 H1: μ ≠
15
A sample of 50 provided a sample mean of 15.15. The population
standard deviation is 3.
a. Compute the value of the test statistic. b. What is the p
value? c. At α = 0.05, what is the rejection rule using the
critical value? What is your conclusion?

In a hypothesis test with hypotheses Ho: μ
≥ 80 and H1:
μ < 80 and , a random sample
of 105 elements selected from the population produced a mean of
74.6. Assume that σ= 23.3, and that the test is to
be made at the 5% significance level.
-What is the critical value of z? -1.96, 1.645, 1.96 or
-1.645
-What is the value of the test statistic, z, rounded to
three decimal places?
-What is the p-value for...

Consider the following hypothesis test for which a sample of 40
provided a mean of 16.5. Assume a population standard deviation of
7.
H0: μ = 15 H1: μ > 15
a. At α = 0.02, what is the critical value for z, and what is
the rejection rule?
b. Compute the value of the test statistic z.
c. What is the P-value?
d. What is your conclusion?

Consider the following hypothesis test:
Ho: μ ≥ 40
Ha: μ < 40
A sample of 49 provides a sample mean of 38 and a sample
standard deviation of 7. Given a test statistic of t=-2, what is
the conclusion in the above test?

Consider the Ho: μ=45; n=48; s=18; α=5%. Write the
rejection rule for the appropriate test statistic.

Consider the following hypothesis test:
H0: μ = 15
Ha: μ ≠ 15
A sample of 50 provided a sample mean of 14.18. The population
standard deviation is 5.
a. Compute the value of the test statistic (to
2 decimals).
b. What is the p-value (to 4
decimals)?
c. Using α = .05, can it be concluded that the
population mean is not equal to 15? SelectYesNo
Answer the next three questions using the critical value
approach.
d. Using α...

Test the claim about the population mean μ at the level of
significance α. Assume the population is normally distributed.
Write out null and alternative hypotheses, your critical t-score
and your t-test statistic. Decide whether you would reject or fail
to reject your null hypothesis.
Claim μ ≥ 13.9
α = 0.05
Sample statistics: x̅ = 13, s = 1.3, n = 10
H0:
Ha:
t0:
t-test statistic:
Decision:

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