Question
The alternative hypothesis is H1: p < 0.15, and the test statistic is z= -1.37 ....
- The alternative hypothesis is H1: p < 0.15, and the test statistic is z= -1.37 . Find p-value of the large sample one proportion z-test.
- Find critical value t a/2 for a one sample t test to test H1: μ ≠ 5 at a significance level a=0.05 and degrees freedom = 15.
- A company wants to determine if the average shearing strength of all rivets manufactured is more than 1000 lbs. A sample of 25 rivets is selected and tested for the shearing strength. After calculation, the mean shearing strength of these 20 selected rivets is 1003.8 lbs and a 99% confidence interval is (1001.4, 1006.2) for the average shearing strength of all rivets manufactured. Which of the following statement is true?
- A machine produces 3-inch nails. A sample of 10 nails is obtained and the lengths determined. After some calculation, the sample mean is 2.94 and the sample standard deviation is 0.11. Find a 90% confidence interval for the population mean length of nails produce by the machine. Please input the upper limit of the confidence interval.
HOUR DEADLINE PLEASE HELP
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
11a. Given the test statistic was (t = -1.24) and the alternative hypothesis was u <...
11a. Given the test statistic was (t = -1.24) and the
alternative hypothesis was u < -1.22 and n was 36 what would the
range of P-Values be? (3 points).
11b. Given the test statistic was (z = 2.30) and the alternative
hypothesis was p > 0.47, determine the P-Value. (3 points)
12. A poll of 2,108 randomly chosen adults showed 93% of them
own cell phones. The claim was 91% of all adults own a cell
phone.
a. Based...
Find the P - value for the test statistic z=−1.41 for the following null and alternative...
Find the P - value for the test statistic z=−1.41 for
the following null and alternative hypotheses:
H0: The population mean is 50.
Ha: The population mean is less than 50.
The P - value is
(b) Find the P - value for the test statistic z=−1.41 for
the following null and alternative hypotheses:
H0: The population mean is 50.
Ha: The population mean is not equal to 50.
The P - value is
Find test statistic and P VALUE and make conclusion for PROPORTION: x=35, n=200, Ho: p=25%, H1:...
Find test statistic and P VALUE and make conclusion for
PROPORTION: x=35, n=200, Ho: p=25%, H1: p<25%, confidence
level=0.05
Find test statistic and P VALUE and make conclusion for MEAN:
x̄=37, s=10.2, n=30, Ho: μ=32, H1: μ≠32, confidence level=0.01
Find test statistic AND P VALUE and make conclusion for TWO
PROPORTIONS: x1 = 6, n1 = 315, x2 = 80, n2 = 320, Ho: p1 = p2, HA:
p1 < p2, α = 0.1
QUESTION 6 Find the standardized test statistic, z, to test the claim that p 1< p...
QUESTION 6 Find the standardized test statistic, z, to test the
claim that p 1< p 2. Use α = 0.10. The sample statistics listed
below are from independent samples. Sample statistics: n 1 = 550, x
1 = 121, and n 2 = 690, x 2 = 195 -2.513 1.116 -2.132 -0.985
QUESTION 7 A random sample of 100 students at a high school was
asked whether they would ask their father or mother for help with a
homework...
In a hypothesis test with hypotheses Ho: μ ≥ 80 and H1: μ < 80 and...
In a hypothesis test with hypotheses Ho: μ
≥ 80 and H1:
μ < 80 and , a random sample
of 105 elements selected from the population produced a mean of
74.6. Assume that σ= 23.3, and that the test is to
be made at the 5% significance level.
-What is the critical value of z? -1.96, 1.645, 1.96 or
-1.645
-What is the value of the test statistic, z, rounded to
three decimal places?
-What is the p-value for...
10. For a particular scenario, we wish to test the hypothesis H0 : p = 0.52....
10. For a particular scenario, we wish to test the hypothesis
H0 : p = 0.52. For a sample of size
50, the sample proportion p̂ is 0.42. Compute the value of
the test statistic zobs. (Express your answer
as a decimal rounded to two decimal places.)
4. For a hypothesis test of
H0 : μ = 8
vs.
H0 : μ > 8,
the sample mean of the data is computed to be 8.24. The
population standard deviation is...
Hypothesis Test Steps: H_0 and H_1 and alpha What test did you choose (Z or T)...
Hypothesis Test Steps:
H_0 and H_1 and alpha
What test did you choose (Z or T) and check any assumptions
that you need to
Find the critical region and critical value(s)
Find the proper test statistic
Find the p-value
State your decision based on both d) and e)
If you reject build the 95% confidence interval
Question 2: Annual per capita consumption of
milk is 21.6 gallons in 2006. Being from the Midwest, you would
think the milk consumption would...
A. Find the p-value of a 2 sided 95% confidence test of hypothesis if the value...
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 =...
Below are some examples of hypothesis testing questions. Match the correct test to the question. -...
Below are some examples of hypothesis testing questions. Match
the correct test to the question.
- Heritage Union has said that 66% of U.S. adults have purchased
life insurance. Suppose that for a random sample of 50 adults from
a given U.S. city, a research finds that only 56% of them have
purchased life insurance. At a 0.05 level of significance test, is
this sample finding significantly lower than the 66% reported by
Heritage Union?
- A scrap metal dealer...
You calculate a one-tailed z-test and find that for your study, z = 1.40, p >...
You calculate a one-tailed z-test and find that for your study,
z = 1.40, p > .05.
A. What is the proportion of the curve that is in the critical
region?
B. Is this a Type I or Type II error?
C. Do you reject or fail to reject the null hypothesis?
D. What is the confidence interval?
For a normal distribution with a population mean μ of 80 and a
population standard deviation (σ) of 50, find each probability...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 7 minutes ago
asked 20 minutes ago
asked 22 minutes ago
asked 26 minutes ago
asked 31 minutes ago
asked 40 minutes ago
asked 46 minutes ago
asked 51 minutes ago
asked 52 minutes ago
asked 58 minutes ago
asked 1 hour ago
asked 1 hour ago