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Question No 4 A music industry professional claims that the standard deviation of the amount of...
Question No 4 A music industry professional claims that the standard deviation of the amount of money that an average teenager spends per month on music is less than $10. The sample standard deviation is estimated to be $14. The music professional surveys 23 students and finds that the mean spending is $37. Test the claim by using α=0.05 by traditional method. Question No 5 A report by the Gallup Poll stated that on average a woman visits her physician...
Alejandra is using a one-sample ?‑test to test the null hypothesis ?0:?=10.0 against the alternative ?1:?<10.0...
Alejandra is using a one-sample ?‑test to test the null hypothesis ?0:?=10.0 against the alternative ?1:?<10.0 using a simple random sample of size ?=15. She requires her results to be statistically significant at level ?=0.05. Determine the maximum value of ?t that will reject this null hypothesis. You may find this table of ?t‑critical values useful. If you are using software, you may find this catalog of software guides useful. Give your answer to three decimal places. ?=
Please show calculations to better help me understand. State null and alternative hypothesis. State the determination...
Please show calculations to better help me understand.
State null and alternative hypothesis. State the determination
of statistical analysis used. Show calculation of test statistic.
What is the critical value? Whether I can reject or fail to reject
the null hypothesis. A statement of the findings.
additional numbers not in picture
non smokers: 14, 9, 17, 15, 9, 3, 15, 12
delayed smokers : 12, 4, 4, 3, 5, 16, 5, 9
active smokers: 7, 4, 1, 2, 0, 6,...
Please be detailed! thank u! Lversus the that e -1versus the 5. In the N(O, 2) family, show fully how to test the null hypothesis that alternative hypothesis that 5, at the 0.05 signifance level,...
Please be detailed! thank u!
Lversus the that e -1versus the 5. In the N(O, 2) family, show fully how to test the null hypothesis that alternative hypothesis that 5, at the 0.05 signifance level, but with the greatest possible power, for a sample of size 16. Be as fully explicit as possible, including justifying that your test is indeed most powerful at this significance level. You can use Ф-0.05)--1.645. Be sure to actually compute the power, as well !...
document or pdf with your answer. Your solution to each problem must have the following: •...
document or pdf with your answer. Your solution to each problem must have the following: • The null and alternative hypotheses with the appropriate symbols. • The significance level of the test. If it is not given use a significance level of 0.05. • The P-value for the test. • State whether you reject or fail to reject the null hypothesis. In other words, compare the P-value to the significance level to decide whether to reject or fail to reject...
Q7) A hypothesis test is to be performed with a Null hypothesis and an alternative hypothesis , the...
Q7) A hypothesis test is to be performed with a Null hypothesis and an alternative hypothesis , the population standard deviation is σ=3.0, the sample size is 30, and the significance level is α=0.025. What is a type I error? (1 mark) What is the chance of making a type I error in the above test? (1 mark) What is a Type II error? (1 mark) What value would the sample mean have to be greater than to reject Ho? (2 marks) It is...
1. Conduct a test of the null hypothesis that the mean height for all students in...
1. Conduct a test of the null hypothesis that the mean height for all students in the Census at School database is equal to 155 cm vs the alternative that the mean Height is greater than 155 cm. Use a significance level of 0.05. a. State the null and alternative hypotheses. Ho: m = 155 Ha: m > 155 b. Provide the Statcrunch output table. Hypothesis test results: Variable Sample Mean Std. Err. DF T-Stat P-value Height 159.86 1.7311103 49...
The Gallup Poll asked 1015 U.S. adults whether they believed that people should pay sales tax...
The Gallup Poll asked 1015 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 437 said they supported such a tax. Does the survey provide convincing evidence that less than 45% of U.S. adults favor an internet sales tax? Use the 0.05 level of significance. Prompt 1: The null hypothesis Ho Prompt 1 Answer Prompt 2: The alternative hypothesis Ha Prompt 2 Answer Prompt 3: The test statistic Prompt 3:...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 387 women...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 387 women and 359 men were independently and randomly selected, and that 241 women and 202 men chose the state of the economy as their biggest concern. Can we conclude that the proportion of women (p1), choosing the state of the economy as their biggest concern, exceeds the proportion of men (p2)? Use a significance level of α=0.01 for the test. Step 1 of 6: State the...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 743 women...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 743 women and 713 men were independently and randomly selected, and that 383 women and 282282 men chose the state of the economy as their biggest concern. Can we conclude that the proportion of women ( p1 ), choosing the state of the economy as their biggest concern, exceeds the proportion of men ( p2 )? Use a significance level of α=0.1 for the test. Step 1...
Please show calculations to better help me understand.
State null and alternative hypothesis. State the determination
of statistical analysis used. Show calculation of test statistic.
What is the critical value? Whether I can reject or fail to reject
the null hypothesis. A statement of the findings.
additional numbers not in picture
non smokers: 14, 9, 17, 15, 9, 3, 15, 12
delayed smokers : 12, 4, 4, 3, 5, 16, 5, 9
active smokers: 7, 4, 1, 2, 0, 6,...
Please be detailed! thank u!
Lversus the that e -1versus the 5. In the N(O, 2) family, show fully how to test the null hypothesis that alternative hypothesis that 5, at the 0.05 signifance level, but with the greatest possible power, for a sample of size 16. Be as fully explicit as possible, including justifying that your test is indeed most powerful at this significance level. You can use Ф-0.05)--1.645. Be sure to actually compute the power, as well !...
document or pdf with your answer. Your solution to each problem must have the following: • The null and alternative hypotheses with the appropriate symbols. • The significance level of the test. If it is not given use a significance level of 0.05. • The P-value for the test. • State whether you reject or fail to reject the null hypothesis. In other words, compare the P-value to the significance level to decide whether to reject or fail to reject...
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