A somewhat outdated study indicates that the mean number of hours worked per week by software developers is 44. We have good reason to suspect that themean number of hours worked per week by software developers, H, is now less than 44 and wish to do a statistical test. We select a random sample of softwaredevelopers and find that the mean of the sample is 40 hours and that the standard deviation is 5 hours.Based on this information, complete the parts below.(a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the test?H, :0OSOH :0D=0(b) Suppose that we decide to reject the null hypothesis. What sort of error might we be making?(Choose one)?(c) Fill in the blanks to describe the Type II error that could occur if the true mean number of hours worked by softwareengineers is 38 hours.A Type II error would be (Choose one)v the hypothesis that l is (Choose one)(Choose one)when, in fact, H is (Choose one)

Name: A somewhat outdated study indicates that the mean number of hours wor
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A somewhat outdated study indicates that the mean number of hours worked per week by software developers is 44. We have good reason to suspect that themean number of hours worked per week by software developers, H, is now less than 44 and wish to do

Hypothesized Mean , μ0 = 44 Sample mean = 40 Sample standard deviation , s = 5 Here the claim is :

Math

Statistics

(a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the test? H, :0 H, :0 (b) Suppose that we decide to reject the null hypothesis. What sort of error might we be making? (Choose one) |(c) Fill in the blanks to describe the Type II error that could occur if the true mean number of hours worked by software engineers is 38 hours. A Type II error would be (Choose one) the hypothesis that H is (Choose one) (Choose one) ▼ when, in fact, µ is (Choose one)

(a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the test? H, :0 H, :0 (b) Suppose that we decide to reject the null hypothesis. What sort of error might we be making? (Choose one) |(c) Fill in the blanks to describe the Type II error that could occur if the true mean number of hours worked by software engineers is 38 hours. A Type II error would be (Choose one) the hypothesis that H is (Choose one) (Choose one) ▼ when, in fact, µ is (Choose one)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up rejecting the null hypothesis in error. True False
State whether the standardized test statistic z indicates that you should reject the null hypothesis. (a) z= 1.225 (b) z = - 1.329 (c) z = - 1.517 (d) z = - 1.158 2 =-1285 (a) For z= 1.225, should you reject or fail to reject the null hypothesis? O A. Fail to reject H, because z - 1.285. O C. Fail to reject H, because z> - 1.285. O D. Reject H, because z<- 1.285.
Solve it correctly please. I will rate accordingly
Suppose there is a claim that a certain population has a mean, H, that is different than 5. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.10 level of significance. To start this test, you write the null hypothesis, Ho, and the alternative hypothesis, H1, as follows. Hg: u= 5 H1: u=5 Suppose you also know the following information. The value of the test statistic based on the sample is 1.506 (rounded to 3 decimal places). The p-value is 0.132 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. Standard Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed 0.3+ Step 2: Enter the test statistic. (Round to 3 decimal places.) 0.2 Step 3: Shade the area represented by the p-value. 0.1+ Step 4: Enter the p-value. (Round to 3 decimal places.) ? (b) Based on your answer to part (a), which statement below is true? Since the p-value is less…
Suppose there is a claim that a certain population has a mean, u, that is equal to 6. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.10 level of significance. To start this test, you write the null hypothesis, H, and the alternative hypothesis, H, as follows. 国 Hoi u=6 Hi u#6 An Suppose you also know the following information. The value of the test statistic based on the sample is 1.845 (rounded to 3 decimal places). The p-value is 0.065 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. Normal Distribution Step 1: Select one-tailed or two-tailed. o One-tailed o Two-tailed 0.3 Step 2: Enter the test statistic. (Round to 3 decimal places.) Step 3: Shade the area represented by the p- value. (b) Based on your answer to part (a), which statement below is true? o Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. Since…
Question 1c needed
Suppose there is a claim that a certain population has a mean, 4, that is different than 9. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.05 level of significance. To start this test, you write the null hypothesis, Ho, and the alternative hypothesis, H1, as follows. Hg: 4= 9 H: u=9 Suppose you also know the following information. The value of the test statistic based on the sample is -2.044 (rounded to 3 decimal places). The p-value is 0.041 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. Standard Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed Two-tailed 0.3+ Step 2: Enter the test statistic. (Round to 3 decimal places.) 0.2+ Step 3: Shade the area represented by the p-value. 0.1+ Step 4: Enter the p-value. (Round to 3 decimal places.) ? (b) Based on your answer to part (a), which statement below is true? O since the p-value is less…
Suppose there is a claim that a certain population has a mean, u, that is different than 7. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.10 level of significance. To start this test, you write the null hypothesis, Ho, and the alternative hypothesis, H, as follows. Ho: H=7 H: u#7 Suppose you also know the following information. The value of the test statistic based on the sample is - 1.845 (rounded to 3 decimal places). The p-value is 0.065 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. O Two-tailed Step 2: Enter the test statistic. (Round to 3 decimal places.) 0.3 Step 3: Shade the area represented by the p- value. 0.2 Step 4: Enter the p- value. (Round to 3 decimal places.) (b) Based on your answer to part (a), which statement below is true? Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. Since the…
Can you please help me located the null?
8.7 If you test a hypothesis and reject the null hypothesis in favor of the alternative hypothesis, does your test prove that the alternative hypothesis is correct? Explain.
State whether the standardized test statistic z indicates that you should reject the null hypothesis. (a) z = 1.608 (b) z= -1.694 (c) z = - 1.749 (d) z= - 1.496 -zo -1.645 0 (a) For z=1.608, should you reject or fail to reject the null hypothesis? O A. Reject Ho because z> - 1.645. O B. Fail to reject Hn because z> -1.645. en O C. Reject Ho because z -1.645. O B. Fail to reject Ho because z -1.645. Click to select your answer. ple MacBook Air esc 2# $ & 3 5 7 8 Q W E R T Y A G K C alt option command B a> >
The average age of managers in a particular industry is over 35 years old, and we wishe to prove this. The null hypothesis to conduct a statistical test on this theory would be: the population mean is ˃ 35, or the population mean is ≤ 35 or the population mean = 35 or the population mean is ≥ 35.