Question

Suppose that we are to conduct the following hypothesis test: H0: μ = 1080 , H1:μ >1080

Suppose that you also know that σ=240, n=100, x¯=1125.6, and take α=0.005. Draw the sampling distribution, and use it to determine each of the following:

A. The value of the standardized test statistic:

1.9 Note: For the next part, your answer should use interval notation. An answer of the form (−∞,a) is expressed (-infty, a), an answer of the form (b,∞) is expressed (b, infty), and an answer of the form (−∞,a)∪(b,∞) is expressed (-infty, a)U(b, infty)

B. The rejection region for the standardized test statistic:

C. The p-value is 0.0287 D. Your decision for the hypothesis test: A. Do Not Reject H0. B. Reject H1. C. Reject H0. D. Do Not Reject H1.

Answer #1

Suppose that we are to conduct the following hypothesis
test:
H0: μ=990
H1:μ>990
Suppose that you also know that σ=220, n=100, x¯=1031.8, and
take α=0.01.
Draw the sampling distribution, and use it to determine each of
the following:
A. The value of the standardized test statistic:
Note: For the next part, your answer should use interval
notation.
An answer of the form (−∞,a) is expressed (-infty, a), an answer
of the form (b,∞) is expressed (b, infty), and an answer...

(1 point) Suppose that we are to conduct the following
hypothesis test:
H0:H1:μμ=>990990H0:μ=990H1:μ>990
Suppose that you also know that σ=240σ=240,
n=80n=80, x¯=1030.8x¯=1030.8, and take
α=0.01α=0.01. Draw the sampling distribution, and use it
to determine each of the following:
A. The value of the standardized test statistic:
Note: For the next part, your answer should use
interval notation. An answer of the form (−∞,a)(−∞,a) is
expressed (-infty, a), an answer of the form (b,∞)(b,∞) is
expressed (b, infty), and an answer...

Suppose that we are to conduct the following hypothesis test:
H0:H1:μμ=>10701070 Suppose that you also know that σ=150, n=90,
x¯=1101.5, and take α=0.01. Draw the sampling distribution, and use
it to determine each of the following: A. The value of the
standardized test statistic: Note: For the next part, your answer
should use interval notation. An answer of the form (−∞,a) is
expressed (-infty, a), an answer of the form (b,∞) is expressed (b,
infty), and an answer of the...

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determine each of the following: A. The value of the standardized
test statistic: Note: For the next part, your answer should use
interval notation. An answer of the form (−∞,?) is expressed
(-infty, a), an answer of...

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population to conduct the hypothesis test ?0:?1:?2?2=>3434
Assume that you know that the sample variance is ?2=57, the sample
size is ?=25, and take ?=0.04. Draw the sampling distribution, and
use it to determine each of the following: A. The value of the
standardized test statistic: Note: For the next part, your answer
should use interval notation. An answer of the form (−∞,?) is
expressed (-infty, a), an...

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each group answering yes'' are given below:
First-Years (Pop. 1):Fourth-Years (Pop.
2):n1=82,n2=84,x1=47x2=47
Is there evidence, at an α=0.035 level of significance,
to conclude that there is a difference in proportions between
first-years and fourth-years? Carry out an appropriate...

A nutrition expert claims that the average American is
overweight. To test his claim, a random sample of 22 Americans was
selected, and the difference between each person's actual weight
and idea weight was calculated. For this data, we have
x¯=18.2x¯=18.2 and s=29.4s=29.4. Is there sufficient evidence to
conclude that the expert's claim is true? Carry out a hypothesis
test at a 4% significance level.
A. The value of the standardized test statistic:
Note: For the next part, your answer...

A company that sponsors LSAT prep courses would like to be able
to
claim that their courses improve scores. To test this, they take
a
sample of 8 people, have each take an initial diagnostic test,
then
take the prep course, and then take a post-test after the
course.
The test results are below (scores are out of 100%):
Person 1,2,3,4,5,6,7,8
Post-Test 86,81,80,68,80,59,64,67
Initial Test 73,74,66,60,76,60,65,62
Is there evidence, at an α=0.075 level of significance, to
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significance level that the population mean is greater than 37.
Test Statistic=
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1) Independent random samples, each containing 90 observations,
were selected from two populations. The samples from populations 1
and 2 produced 21 and 14 successes, respectively.
Test H0:(p1?p2)=0 against
Ha:(p1?p2)?0. Use
?=0.07.
(a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. We can reject the null hypothesis that
(p1?p2)=0 and accept that
(p1?p2)?0.
B. There is not sufficient evidence to reject the
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