Question

Using either the critical value rule or the *p*-value
rule, if a one-sided null hypothesis for a single mean cannot be
rejected at a given significance level, then the corresponding
two-sided null hypothesis (i.e., the same sample size, the same
standard deviation, and the same mean) will ______________ be
rejected at the same significance level.

always

sometimes

never

Answer #1

Using either the critical value rule or the p-value rule, if a
one-sided null hypothesis for a single mean cannot be rejected at a
given significance level, then the corresponding two-sided null
hypothesis (i.e., the same sample size, the same standard
deviation, and the same mean) will **never** be
rejected at the same significance level.

**Answer: never**

**Note:** For one tailed test, if the null
hypothesis is not rejected at a given significance level . That
means, p-value is greater than .

implies that, p-value is also greater than in a two-tailed and we do not reject the null hypothesis. Because, In two-tailed test,

p-value = 2 * p-value in one-tailed.

Using the critical value rule, if a two-sided null hypothesis
cannot be rejected for a single mean at a given significance level,
then the corresponding one-sided null hypothesis (i.e., the same
sample size, the same standard deviation, and the same mean) will
______________ be rejected at the same significance level.
a. never
b. sometimes
c. always

If a two-sided null hypothesis is not rejected for a single mean
at a given significance level, the corresponding one-sided null
hypothesis (i.e., the same sample size, the same standard deviation
and the same mean) will _________ be rejected at the same
significance level.
A. Always
B. Sometimes
C. Never

32. If a one-sided null hypothesis is rejected at a given
significance level, then the corresponding two-sided null
hypothesis (i.e., the same sample size, the same standard deviation
and the same mean) will be _______ rejected at the same
significance level
A. never
B. always
C. sometimes

Using the traditional hypothesis testing approach, calculate the
critical value for testing the null hypothesis that the population
mean is greater than or equal to 8, given a sample
size of 32, a population standard deviation
3.63, and a significance level of
0.05.
K =
Round to two decimals.

A. Find the p-value of a 2 sided 95% confidence test of
hypothesis if the value found for the sample mean was 14.53 the
Null Hypothesis assumes that the population mean is Mu = 14, the
population standard deviation is 3 and the sample size is 14
B. Find the p-value of a 2-sided 95% confidence test of
hypothesis if the value found for the sample mean was 35.71 the
Null Hypothesis assumes that the population mean is Mu =...

When using inferential statistics, it is critical to
have:
More than one degree of freedom.
A truly random sample of the population.
A binomial random variable
A strong correlation with a Poisson distribution.
A normally distributed population.
The three ways of assessing probabilities
are:
Classical, Empirical, and Subjective
Normal, Poisson, and Hypergeometric
Type I, Type II, and Secular
Binomial, Geometric, and a priori
Global test, Histogram, and Stepwise
If there are three, equally-likely events, the
probability of each event occurring...

9) A business was attempting to measure if increased advertising
led to more online sales revenue. Data shows that the average
monthly sales revenue were $100,000,000 prior to the new campaign.
Please write a null and alternative hypothesis that would guide the
research.
10) If the above business owner was only concerned about if the
sales revenue increased how would you express the null and
alternative hypothesis?
14) Using the p-value rule, if a null hypothesis is
rejected at a...

Identify the null and alternative hypothesis(in symbolic and
sentence form), test statistic, P-value(or critical values),
conclusion about the null hypothesis, and final conclusion that
addresses the original claim (Don’t just say Reject the null
hypothesis or fail to reject the null hypothesis).
3. Test the claim that for the population of female college
students, the mean weight is given by μ=132 lb Sample data are
summarized as n=20,x ̅=137lb and s=14.2. Use a significance level
of α=0.10.

1. The P-value of a test of the null hypothesis is
a. the probability the null hypothesis is true.
b. the probability the null hypothesis is false.
c. the probability, assuming the null hypothesis is false, that
the test statistic will take a value at least as extreme as that
actually observed.
d. the probability, assuming the null hypothesis is true, that
the test statistic will take a value at least as extreme as that
actually observed.
2. The P-value...

14.
Calculate the critical t-value(s) for each of the given
hypothesis test scenarios below. If mulitple critical values exist
for a single scenario, enter the solutions using a comma-separated
list. Round t-values to four decimal places.
Find the critical t-value(s) for a left-tailed test of
hypothesis for a mean, assuming the population standard deviation
is unknown, with a sample size of 25 and let α=0.005.
t=
Find the critical t-value(s) for a right-tailed test of
hypothesis for a mean, assuming...

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