Question

The hypothesis test:

Group of answer choices

has no tails

is two-tailed

is left-tailed

is right-tailed

The following are a random sample of adult ski sweater prices are from the Gorsuch Ltd. Winter catalog:

{$212, $292, $278, $199$280, $236}

Assume the underlying sweater price population is approximately normally distributed. A hypothesis test is done to determine whether the average price of all adult ski sweaters from Gorsuch Ltd. is at least $275.

The correct distribution to use for the hypothesis test is:

Group of answer choices

Binomial

Normal

Exponential

Student-t

The correct conclusion for this test is

Group of answer choices

he true average price of all adult ski sweaters in this catalog NOT more than $275.

The true average price of all adult ski sweaters in this catalog is less than $275.

The true average price of all adult ski sweaters in this catalog is more than $275.

The true average price of all adult ski sweaters in this catalog is $249.50

The true average price of all adult ski sweaters in this catalog is NOT less than $275.

Answer #1

**SORRY FOR THE CUTTINGS ........**

**I HOPE I WAS HELPFUL AND HAVE CLEARED YOUR
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**THANKYOU**

The following randomly selected adult ski sweater prices are
from the Gorsuch Ltd. Winter catalog: $212, $292, $278, $199, $280,
$236, $145. Find the mean, median, mode, range and the correct
standard deviation for these prices, respectively.
Group of answer choices
234.57, 236, none, 147, 50.50
230, 235, none, 147, 154
232.57, 199, 236, 148, 52.20
234.57, 236, none, 147, 53.30

a)
Suppose we have a left-tailed hypothesis test about µ conducted
at α = 0.10. If the sample size is n = 7, what is the correct
rejection region?
Group of answer choices
t > 1.440
z > 1.28
z < -1.28
t < -1.440
b)
Danny was recently hired by Mr. Peanut to demonstrate (at α =
0.05) that less than 50% of Mr. Peanuts’ Mixed Nuts are peanuts.
Danny randomly sampled 120 mixed nuts and found that 42...

The null and alternative hypotheses are given. Determine whether
the hypothesis test is left-tailed, right-tailed, or two-tailed.
What parameter is being tested? H0: σ=4.2 H1: σ≠4.2
Choose the correct answer below. Two-tailed,Left-tailed,
Right-tailed
What parameter is being tested? μ,σ, p

Tell whether the following call for a right-tailed,
left-tailed, or two-tailed alternative hypothesis:
A worker is testing whether the strength of a bolt
exceeds the industry requirements.
A chef wants to know whether there is a change of
opinion on his food after making some minor adjustments to the
recipes.
A state official wants to test whether the changes of
winning a lottery are less than advertised.
4. A chemist believes a new compound he’s discovered
will speed up certain...

The answer choices below represent different hypothesis tests.
Which of the choices are one-tailed tests? Select
all correct answers.
Select all that apply:
H0:p=0.13, Ha:p≠0.13
H0:p≤0.44, Ha:p>0.44
H0:p≥0.18, Ha:p<0.18
H0:p=0.27, Ha:p≠0.27
H0:p=0.26, Ha:p≠0.26

1.
The power of a statistical hypothesis test should be
Group of answer choices
small
large
equal to 1 - α
2.
If the Type II error rate of a statistical hypothesis test is
0.15,
Group of answer choices
the Type I error rate is 0.15
the Type I error rate is 0.85
the power is 0.15
the power is 0.85
3.
If sampled observations are from a normal distribution, the
QQplot should look
Group of answer choices
bell-shaped
u-shaped...

In a two-tailed hypothesis test of the mean using a 0.05 level
of significance, researchers calculated a p-value of 0.03. What
conclusion can be drawn? The alternative hypothesis should be
rejected because the p-value is so small. The null hypothesis is
true because the p-value is less than the level of significance.
The alternative hypothesis is 3% likely to be true. The null
hypothesis should be rejected because the p-value is less than the
level of significance.
1.The alternative hypothesis...

Which of the following statements about rejecting the null
hypothesis is true? Group of answer choices If the p-value is such
that you can reject Ho for a 5% level of significance, you can
always reject it for a 1% level of significance. If the sample data
is such that for a one-tailed test of the mean you can reject Ho at
the 1% level of significance, you can always reject Ho for a
two-tailed test at the same level...

Which of the following is not an assumption of
the z test?
Group of answer choices
The dependent variable is measured as a scale variable.
Participants are randomly selected.
A one-tailed test is being used.
All of the options listed above are assumptions of the z
test.
None of the options listed above are assumptions of the z
test.

1.) One tailed test or two tailed test?
You are performing a hypothesis test for the mean sample weight
of your fellow Intro to Statistics students. For your null
hypothesis , the hypothesized mean weight for the entire campus
student body is 165. You have no reason to know for your
alternative hypothesis whether the actual mean weight for the
entire student campus body is more or less than 165. So you decide
to make your alternative hypothesis as not...

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