Question
In: Math
11. Determine the p-value given the stated hypothesis and the test statistic value (Z) Ho:μ= 300...
11. Determine the p-value given the stated hypothesis and the test statistic value (Z) Ho:μ= 300 H1: μ < 300; z = -2.13 Answer to 4 decimal places.
12. Determine the p-value given the stated hypothesis and test statistic value (Z). Ho: μ = 120 H1: μ ≠ 120; z = 1.92. Answer to 4 decimal places.
13. Some people claim that the physical demand on dancers are such that dancers tend to be shorter than the typical person. Nationally, adult heights are normally distributed with an average of 64.5 inches. A random sample of 20 adult dancers has an average height of 63.275 inches and a standard deviation of 2.17 inches. Is there evidence that dancers are shorter? Calculate the test-statistic for a test
Ho: μ = 64.5 versus Ha: μ < 64.5
Compute the test statistic for this test. (round your answer to 2 decimal places)
14. The mean caffeine content per cup of regular coffee served at a certain coffee shop is supposed to be 100mg. A test is made of Ho: μ=100 versus Ha: μ≠100. A sample of 35 cups does not provide enough evidence that the mean caffeine content is different from 100mg. Which type of error is possible in this situation?
| A. |
Type 2 error |
|
| B. |
Type 1 error |
|
| C. |
Impossible to tell |
|
| D. |
Either type is possible |
Solutions
Expert Solution
11. Since, significance level is not given, we assume it to be 0.05.
Since the test is left tailed, the p value would be P(z<-2.13)
This probability can be found by simply looking at the z left table.
P(z<-2.13)= 0.0166
milcah answered 1 year agoRelated Solutions
Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide...
Find the P-value for the indicated hypothesis test with the
given standardized test statistic, z. Decide whether to reject
Upper H0
for the given level of significance
alphaα.
Two-tailed test with test statistic
zequals=−2.18
and
alphaαequals=0.04
P-valueequals=
p-value=___ (round to four decimal places if needed)
state your conclusion.
fail to reject or reject h0
#38
Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide...
Find the P-value for the indicated hypothesis test with the
given standardized test statistic, z. Decide whether to reject
Upper H 0H0
for the given level of significance
alphaα.
Two-tailed test with test statistic
z=- −2.15 0.08
test statistic
z= -2.15 and α=0.08
P-value=_____
(Round to four decimal places as needed.)
2)Find the critical value(s) and rejection region(s) for the
indicated t-test, level of significance
α,and sample size n. Left-tailed test,
α=0.10,
n=13
The critical value(s) is/are
Find the P- value for the hypothesis test with the standardized test statistic z. Decide whether...
Find the P- value for the hypothesis test with the standardized
test statistic z. Decide whether to reject H0 for the level of
significance α. Two- tailed test z = 1.95 α = 0.05
Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to...
Find the P-value for the hypothesis test with the standardized
test statistic z. Decide whether to reject H0 for the level of
significance α. ( Marks 2)
Right-tailed test
z = 0.52
α = 0.06
Question No 4 Find the P-value for the hypothesis test with the standardized test statistic z....
Question No 4
Find the P-value for the hypothesis test with the standardized
test statistic z. Decide whether to reject H0 for the level of
significance α. (Marks 1.5)
Left -tailed test
z = -1.52
α = 0.04
A trucking firm suspects that the mean life of a certain tire
it uses is less than 35,000 miles. To check the claim, the firm
randomly selects and tests 18 of these tires and gets a mean
lifetime of 34,450 miles with...
Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to...
Find the P-value for the hypothesis test with the standardized
test statistic z. Decide whether to reject H0 for the level of
significance α.
Right-tailed test
z = 0.52
α = 0.06
A manufacturer claims that the mean lifetime of its fluorescent
bulbs is 1000 hours. A homeowner selects 40 bulbs and finds the
mean lifetime to be 990 hours with a standard deviation of 80
hours. Test the manufacturer’s claim. Use α = 0.04 and use
traditional approach.
For a given hypothesis test, the p-value of the test statistic equals 0.032. This implies a...
For a given hypothesis test, the p-value of the test statistic
equals 0.032. This implies a 0.032 probability of making a:
a.) Type I error
b.) Type II error
c.) Correct rejection of the null
d.) Correct acceptance of the null
Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...
Test the given claim. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and then state
the conclusion about the null hypothesis, as well as the final
conclusion that addresses the original claim. Among 2084 passenger
cars in a particular region, 241 had only rear license plates.
Among 349 commercial trucks, 53 had only rear license plates. A
reasonable hypothesis is that commercial trucks owners violate laws
requiring front license plates at a higher rate than owners of
passenger cars....
Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...
Test the given claim. Identify the null hypothesis, alternative
hypothesis, test statistic, P-value, and then state the conclusion
about the null hypothesis, as well as the final conclusion that
addresses the original claim. Among
2173
passenger cars in a particular region,
235
had only rear license plates. Among
335335
commercial trucks,
5151
had only rear license plates. A reasonable hypothesis is that
commercial trucks owners violate laws requiring front license
plates at a higher rate than owners of passenger cars....
Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...
Test the given claim. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and then state
the conclusion about the null hypothesis, as well as the final
conclusion that addresses the original claim. Among 2091 passenger
cars in a particular region, 226 had only rear license plates.
Among 375 commercial trucks, 56 had only rear license plates. A
reasonable hypothesis is that commercial trucks owners violate laws
requiring front license plates at a higher rate than owners of
passenger cars....
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- I. Design and code a class Rectangle that has the following properties: Two private members double...
- A bond has a $1,000 par value, 10 years to maturity, and an 8% annual coupon...
- The following are the monthly rates of return for Madison Cookies and for Sophie Electric during...
- 1.) Think back to August 6, 1945. The United States has just dropped an atomic weapon...
- Carry out the equipment and operating procedures between injection molding of thermoplastics and injection molding of...
- The cumulative timing approach was used to time a job and its elements. Use the following...
- absorption refection scattering refraction and diffraction can all have an impact on RF signal strength. Identify...
ADVERTISEMENT