Question

You wish to test the claim that μ > 24 at a level of significance of α = 0.05 and are given sample statistics n=50 and x=243 . Assume the population standard deviation is 1.2. Compute the value of the standardized test statistic. Round your answer to two decimal places.

Answer #1

You wish to test the claim that μ = 49 at a level of
significance of α = 0.05 and are given sample statistics n = 5, =
51, and s = 15. Compute the value of the standardized test
statistic, t. Round your answers to three decimal places.

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 z-score
and your z-test statistic. Decide whether you would reject or fail
to reject your null hypothesis.
Claim: μ > 28; α = 0.05, σ = 1.2
Sample statistics: x̅ = 28.3, n = 50
H0:
Ha:
Critical z-score:
Z test statistic:
Decision:

You wish to test the claim that μ < 70 μ<34 at a level of
significance of 0.60. In a sample of size 65, you find the sample
mean to be 33 . Assuming the population standard deviation σ=3.88
and the values are normally distributed, compute the value of the
test statistic and p-value.

You wish to test the following claim ( H a Ha ) at a
significance level of α = 0.05 α=0.05 . H o : μ = 73.4 Ho:μ=73.4 H
a : μ > 73.4 Ha:μ>73.4 You believe the population is normally
distributed, but you do not know the standard deviation. You obtain
a sample of size n = 67 n=67 with mean M = 75.5 M=75.5 and a
standard deviation of S D = 13.4 SD=13.4 .
What is...

Use a t-test to test the claim about the population mean μ at
the given level of significance α using the given sample
statistics. Assume the population is normally distributed.
Claim: μ ≠ 24; α=0.10 Sample statistics: x overbar =
21.4, s = 4.2 , n equals = 11
What are the null and alternative hypotheses? Choose the
correct answer below.
A.H0: μ≠24
Ha: μ=24
B.H0: μ≤24
Ha: μ>24
C.H0: μ=24
Ha: μ≠24
D.H0: μ≥24
Ha: μ than<24...

You wish to test the following claim (H1H1) at a significance
level of α=0.005α=0.005.
Ho:μ=80.2Ho:μ=80.2
H1:μ≠80.2H1:μ≠80.2
You believe the population is normally distributed, but you do not
know the standard deviation. You obtain a sample of size n=375n=375
with a mean of ¯x=79.8x¯=79.8 and a standard deviation of
s=7.8s=7.8.
What is the test statistic for this sample? (Report answer accurate
to three decimal places.)
test statistic =

You wish to test the following claim ( H a ) at a significance
level of α = 0.01 . H o : μ = 59.6 H a : μ ≠ 59.6 You believe the
population is normally distributed and you know the population
standard deviation is σ = 8.7 . You obtain a sample mean of ¯ x =
64.2 for a sample of size n = 21 . What is the test statistic for
this sample? test statistic...

You wish to test the following claim (H1) at a significance
level of α=0.02.
Ho:μ=76.5
H1:μ≠76.5
You believe the population is normally distributed, but you do not
know the standard deviation. You obtain a sample of size n=209 with
a mean of ¯x=79.4 and a standard deviation of s=11.5.
What is the test statistic for this sample? (Report answer accurate
to three decimal places.)
test statistic =

You wish to test the following claim ( H a H a ) at a
significance level of α = 0.02
H o : μ = 56.9
H a : μ > 56.9 H
You believe the population is normally distributed, but you do
not know the standard deviation. You obtain a sample of size n = 24
with mean M = 63 and a standard deviation of S D = 18.6 . What is
the test statistic for this...

You wish to test the following claim ( H 1 ) at a significance
level of α = 0.005 . H 0 : μ = 74.5 H 1 : μ > 74.5 You believe
the population is normally distributed, but you do not know the
standard deviation. You obtain a sample of size n = 15 with mean ¯
x = 86.8 and a standard deviation of s = 13.2 . What is the test
statistic for this sample? (Report...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 22 seconds ago

asked 23 seconds ago

asked 3 minutes ago

asked 18 minutes ago

asked 30 minutes ago

asked 33 minutes ago

asked 34 minutes ago

asked 42 minutes ago

asked 43 minutes ago

asked 47 minutes ago

asked 51 minutes ago

asked 51 minutes ago