Question
In: Statistics and Probability
Determine the critical values that would be used in testing each of the following null hypotheses...
Determine the critical values that would be used in testing each of the following null hypotheses using the classical approach. (Give your answers correct to three decimal places.) (a) Ho: ρ = 0 vs. Ha: ρ ≠ 0, with n = 18 and α = 0.05 (smaller value) (larger value) (b) Ho: ρ = 0 vs. Ha: ρ > 0, with n = 32 and α = 0.01 (c) Ho: ρ = 0 vs. Ha: ρ < 0, with n = 16 and α = 0.05
Solutions
orchestra answered 1 year agoRelated Solutions
Determine the critical values that would be used in testing each of the following null hypotheses...
Determine the critical values that would be used in testing each
of the following null hypotheses using the classical approach.
(Give your answers correct to three decimal places.)
(a) Ho: ρ = 0 vs.
Ha: ρ ≠ 0, with n = 18 and
α = 0.05
(smaller value)
(larger value)
(b) Ho: ρ = 0 vs.
Ha: ρ > 0, with n = 32 and
α = 0.01
(c) Ho: ρ = 0 vs.
Ha: ρ < 0, with n...
For each of the following tests of hypotheses, determine whether the null hypotheses should be rejected....
For each of the following tests of hypotheses, determine whether
the null hypotheses should be rejected. Use the classical method by
finding the lower xL and upper xU limits for two-tail tests (or one
of the two for a one-tail test). Additionally, don't forget to use
a t-value (rather than a z-value) when n<30.
A) Ho: µ = 6,000 Ha: µ ≠ 6,000; n = 70; x = 6,150; σ = 2,600; α
= .01
B) Ho: µ = 50...
Write the null and alternative hypotheses for each of the following examples. Determine if each is...
Write the null and alternative hypotheses for each of the
following examples. Determine if each is a case of a two-tailed, a
left-tailed, or a right-tailed test. Also determine the sampling
distribution for the hypothesis test.
a.To test if the mean number of hours spent working per week by
college students who hold jobs is different from 20 hours.
b.To test whether or not a bank’s ATM is out of service for an
average of more than 10 hours per...
Write the null and alternative hypotheses for each of the following examples. Determine if each is...
Write the null and alternative hypotheses for each of the
following examples. Determine if each is a case of a two-tailed, a
left-tailed, or a right-tailed test. (a) To test if the mean number
of hours spent working per week by college students who hold jobs
is different from 20 hours (b) To test whether or not a bank’s ATM
is out of service for an average of more than 10 hours per month
(c) To test if the mean...
State the null and alternative hypotheses, calculate the test statistic, determine the critical value for the...
State the null and alternative hypotheses, calculate the test
statistic, determine the critical value for the given alpha,
determine whether to reject or retain the null, and then draw a
conclusion about the original study based on the significance test
results.
4. The following data were observed when examining the reasons
for using teasing statements in the discourse of college
students.
Trying to Impress Not Trying to Impress
Males 30 10
Females 20 30
a. (2 point) State the null...
State the null and alternative hypotheses, calculate the test statistic, determine the critical value for the...
State the null and alternative hypotheses, calculate the test
statistic, determine the critical value for the given alpha,
determine whether to reject or retain the null, and then draw a
conclusion about the original study based on the significance test
results.
3. Two hundred and twenty fifth-graders in Norman took an IQ
test. Students were placed in one of eight categories based on
their IQ score. Determine whether this distribution of 114 fifth
graders differs from the theoretical distribution based...
1) Use either the critical value or p-value method for testing hypotheses. 2) Identify the null...
1) Use either the critical value or p-value method for testing
hypotheses.
2) Identify the null and alternative hypotheses, test statistic,
P-value (or range of P-values), and critical value(s).
3) State your final conclusion that addresses the original claim.
Include a confidence interval as well and restate this in your
original conclusion.
In a random sample of 300 patients, 21 experienced nausea. A
drug manufacturer claims that fewer than 10% of patients who take
its new drug for treating Alzheimer’s...
1.) For each problem, state the null and alternative hypotheses, calculate the critical value(s) of the...
1.) For each problem, state the null and alternative hypotheses,
calculate the critical value(s) of the statistic by which you would
reject the null hypothesis and state whether or not you would
reject the null hypothesis for a level α specified by each problem.
If the hypothesis test requires an unpaired t-test, then you may
assume that the population variances are equal. Then calculate the
appropriate statistic value by hand and use the appropriate
probability table to obtain the exact...
For each of the following: a) state the null and alternative hypotheses &n
For each of the following: a) state the null and
alternative hypotheses
b) state the type I & type II errors
c) state the consequences of each error
d) is one more serious? Explain.
1) You have created a new manufacturing method for
producing widgets which you claim will reduce the time necessary
for assembling the parts. Currently it takes 75 seconds to produce
a widget. The retooling of the plant for this change is very
expensive...
State the null and alternative hypotheses for each of the following situations (each ½ point): a)...
State the null and alternative hypotheses for each of the
following situations (each ½ point):
a) A guideline for a telemarketing company states the mean time
for completed calls should not exceed four minutes. Each month the
company’s owner selects a random sample of call logs to determine
whether the call-time goal is being met.
b) General Crunch Corporation distributes Mini-Oats Cereal in
boxes with a stated weight of 18 ounces. To determine whether the
filling machine should be adjusted,...
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