Question

For the following problems, (a) identify null hypothesis, alternative hypothesis, (b) determine whether it is left-tailed, right-tailed, or two-tailed, (c) find the p-value, (d) make the decision whether you reject the null hypothesis or fail to reject the null hypothesis, and e) interpret your result.

4). A medical researcher says that less than 80% of U.S. adults think that healthy children

should require to be vaccinated. In a random sample of 200 U.S. adults, 164 think that

healthy children should be required to be vaccinated. At α=0.05 significance level

Answer #1

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Hypothesis Testing Using Rejection Regions. In
Exercises 7–12, (a) identify the claim and state H0 and Ha, (b)
find the critical value(s) and identify the rejection region(s),
(c) find the standardized test statistic z, (d) decide whether to
reject or fail to reject the null hypothesis and (e) interpret the
decision in the context of the original claim.
7. Vaccination Requirement A medical researcher
says that less than 80% of U.S. adults think that healthy children
should be required to...

a) Identify the claim: state the null and alternative
hypotheses. b) Determine the test: left-tailed, right-tailed, or
two-tailed. c) Identify the degree of freedom and determine the
critical value. d) Graph your bell-shaped curve and label the
critical value. e) Find your standardized test statistic ? and
label it on your graph. f) Decide whether to reject or fail to
reject the null hypothesis. g) Interpret your result.
A dealership projected that the mean waiting time at a
dealership is...

A medical researcher says that less than 82% of adults in a
certain country think that healthy children should be required to
be vaccinated. In a random sample of 600 adults in that country,
80% think that healthy children should be required to be
vaccinated. At alphaαequals=0.01, is there enough evidence to
support the researcher's claim? Complete parts (a) through (e)
below.
c) Find the standardized test statistic z.
z= ???
d) Decide whether to reject or fail to reject...

a) Identify the claim: state the null and alternative
hypotheses. b) Determine the test: left-tailed, right-tailed, or
two-tailed. c) Graph your bell-shaped curve and label your levels
of significance or critical value. d) Find your standardized test
statistic ? and label it on your graph. e) Decide whether to reject
or fail to reject the null hypothesis. f) Interpret your
result.
A study was conducted to determine if the salaries of elementary
school teachers from two neighboring states were equal....

A medical researcher says that less than
88%
of adults in a certain country think that healthy children
should be required to be vaccinated. In a random sample of
500
adults in that country,
85%
think that healthy children should be required to be vaccinated.
At α=0.01,
is there enough evidence to support the researcher's claim?
Complete parts (a) through (e) below.
(a) Identify the claim and state H0 and Ha.
Identify the claim in this scenario. Select the correct...

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

Determine whether the claim stated below represents the null
hypothesis or the alternative hypothesis. If a hypothesis test is
performed, how should you interpret a decision that (a) rejects
the null hypothesis or (b) fails to reject the null
hypothesis?
A researcher claims that the standard deviation of the life of a
certain type of lawn mower is less than 2.4 years
Does the claim represent the null hypothesis or the alternative
hypothesis?
Since the claim a) -------- a statement...

A medical researcher says that less than 72% of adults in a
certain country think that healthy children should be required to
be vaccinated. In a random sample of 400 adults in that country,
69% think that healthy children should be required to be
vaccinated. At α=0.05, is there enough evidence to support the
researcher's claim? Select the correct choice below and fill in the
answer box to complete your choice. (Type an integer or a decimal.
Do not round.)...

Determine whether the claim stated below represents the null
hypothesis or the alternative hypothesis. If a hypothesis test is
performed, how should you interpret a decision that (a) rejects
the null hypothesis or (b) fails to reject the null
hypothesis?
A scientist claims that the mean incubation period for the eggs of
a species of bird is less than 36 days.
Does the claim represent the null hypothesis or the alternative
hypothesis?
Since the claim
▼
a statement of equality,...

Determine whether the claim state
below represents the null hypothesis or the alternative hypothesis.
If a hypothesis test is performed, how should you interpret a
decision that A.) rejects the null or B.) fails to reject the null
hypothesis?
A scientist claims that the mean
incubation period for the eggs of a species of a bird is more than
51 days.
Does the claim represent the null
hypothesis or the alternative hypothesis?
Since the claim ____ a statement of
equality,...

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