Summary statistics for the scores of the 27 students who completed a Dental Anxiety Scale questionnaire are x= 10.7 and s= 3.3. Scores range from 0 (no anxiety) to 20 (extreme anxiety). Conduct a test of hypothesis to determine whether the mean Dental Anxiety Scale score for thepopulation of college students differs from u= 11. Use a= 0.01.State the null and alternative hypotheses. Choose the correct answer below.O A. Ho: u# 11 versus Ha:p= 11O B. Ho: H= 11 versus Hg: u> 11O c. Ho: u= 11 versus Ha:P#11The test statistic for this small-sample test of a population mean is(Round to two decimal places as needed.)Find the rejection region. Choose the correct answer below.O A. t> -2.779 and t<2.779O B. t< -2.779 or t> 2.779Oc. t< -2.779O D. t>2.779State the appropriate conclusion for the test. Choose the correct answer below.There is sufficient evidence to reject HoThere is insufficient evidence to reject Ho

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Summary statistics for the scores of the 27 students who completed a Dental Anxiety Scale questionnaire are x= 10.7 ands = 3.3. Scores range from 0 (no anxiety) to 20 (extreme anxiety). Conduct a test of hypothesis to determine whether the mean Dental Anxiety Scale score for th population of college students differs from u= 11. Use a0.01. State the null and alternative hypotheses. Choose the correct answer below. O A. Ho: u 11 versus H3: u= 11 O B. Ho: = 11 versus Ho: u> 11 OC. Ho: H= 11 versus Ha: H# 11 The test statistic for this small-sample test of a population mean is (Round to two decimal places needed.) Find the rejection region. Choose the correct answer below. O A. t> -2.779 and t<2.770 O B. t< -2.779 or t>2.770 Oc. t< -2.779 O D. t>2.779 State the appropriate conclusion for the test. Choose the correct answer below. There is sufficient evidence to reject Ho- There is insufficient evidence to reject Ho-

Summary statistics for the scores of the 27 students who completed a Dental Anxiety Scale questionnaire are x= 10.7 ands = 3.3. Scores range from 0 (no anxiety) to 20 (extreme anxiety). Conduct a test of hypothesis to determine whether the mean Dental Anxiety Scale score for th population of college students differs from u= 11. Use a0.01. State the null and alternative hypotheses. Choose the correct answer below. O A. Ho: u 11 versus H3: u= 11 O B. Ho: = 11 versus Ho: u> 11 OC. Ho: H= 11 versus Ha: H# 11 The test statistic for this small-sample test of a population mean is (Round to two decimal places needed.) Find the rejection region. Choose the correct answer below. O A. t> -2.779 and t<2.770 O B. t< -2.779 or t>2.770 Oc. t< -2.779 O D. t>2.779 State the appropriate conclusion for the test. Choose the correct answer below. There is sufficient evidence to reject Ho- There is insufficient evidence to reject Ho-

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The US Department of Energy reported that 49% of homes were heated by natural gas. A random sample of 327 homes in Oregon found that 143 were heated by natural gas. Test the claim that proportion of homes in Oregon that were heated by natural gas is different than what was reported. Use a 10% significance level. Give answer to at least 4 decimal places. a. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) H0: H1: Based on the hypotheses, compute the following:b. Test Statistic = c. p-value = d. Based on the above we choose to e. The correct summary would be: that the proportion of homes in Oregon that were heated by natural gas is different than what the DOE reported value of 49%. Question HelpQuestion 14: Video1
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
Use technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: µ> 1170; a = 0.07; o = 212.01. Sample statistics: x= 1185.03, n= 300 Identify the null and alternative hypotheses. Choose the correct answer below. Ο Α. Ho μ2 1185.03 Ο Β. Ho : με 1185.03 Ha: µ 1185.03 O C. H μ2 1170 O D. Ho: µ> 1170 Ha: H 1185.03 Ha: µ> 1170 Ha: us1185.03 Calculate the standardized test statistic. The standardized test statistic is (Round to two decimal places as needed.) Determine the P-value. P = (Round to three decimal places as needed.) Determine the outcome and conclusion of the test. Ho. At the 7% significance level, there enough evidence to the claim.
A golf association requires that golf balls have a diameter that is 1.68 inches. To determine if golf balls conform to the standard, a random sample of golf balls was selected. Their diameters are shown in the accompanying data table. Do the golf balls conform to the standards? Use the a= 0.05 level of significance. Click the icon to view the data table. - X Data Table Golf Ball Diameter (inches) First determine the appropriate hypotheses. 1.677 1.681 Ho ▼ 1.678 1.686 ▼ H₁ ▼ 1.684 1.673 (Type integers or decimals. Do not round.) 1.682 1.675 Help me solve this View an example H Type here to search O 3 4 F T Get more Bi a & 6 B 7 U hp a 1.682 1.685 1.684 1.685 Print O 9 Done (?) O 95°F Mostly sunny ^ ver 1:43 PM 6/18/2022
a. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean. Ho: $21.5 Ha: >21.5 b. What is a point estimate of the difference between mean annual consumption in Webster City and the national mean? (2 decimals) c. At a = 0.01, test for a significant difference by completing the following. Calculate the value of the test statistic (2 decimals). The p-value is Reject the null hypothesis? (4 decimals) Yes v What is your conclusion? Conclude the population mean consumption of milk in Webster City is greater tha
A study analyzed the sustainability behaviors of CPA corporations. The level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 974 senior managers at CPA firms. The CEO of a CPA firm claims that the true mean level of support for sustainability is 71. Complete parts a through e below. i Click the icon to view a printout of the analysis. a. Specify the null and alternative hypotheses for testing this claim. O A. Ho: μ=71 Ha: μ#71 O C. Ho: μ#71 H₂: H=71 O B. Ho: μ = 71 Ha: μ>71 O D. Ho: μ = 71 Ha: μ<71
The following table shows the results of a survey focused on alcohol use among teen girls. Is there a significant relationship between race and trying alcohol among teen girls? Assume race is the independent variable. Add appropriate percentages to the table. a. Write one sentence describing the pattern you see, using specific percentages. b. State the null and research hypotheses c. Calculate the appropriate test statistic. d. What is the critical value at which p<.05? e. What do you conclude?
The US Department of Energy reported that 45% of homes were heated by natural gas. A random sample of 348 homes in Oregon found that 156 were heated by natural gas. Test the claim that proportion of homes in Oregon that were heated by natural gas is different than what was reported. Use a 1% significance level. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Ho: P Test Statistic = =✓ ✓ OF H₁: P Based on the hypotheses, compute the following: p-value = 45 0° 45 OB vo
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The data in the accompanying table give the weights (in g) of randomly selected quarters that were minted after 1964. The quarters are supposed to have a median weight of 5.670 g. Use the sign test and a 0.01 significance level to test the claim that the median is equal to 5.670 g. Do quarters appear to be minted according to specifications? Click the icon to view the data. What are the null and alternative hypotheses? O A. Ho: Median weight = 5.670 g H₁: Median weight 5.670 g More Info OB. Ho: Median weight ≤ 5.670 g H₁: Median weight = 5.670 g O D. Ho: Median weight = 5.670 g H₁: Median weight # 5.670 g 0 Post-1964 Quarters 5.5863 5.5764 5.6582 5.5649 5.5844 5.7402 5.7367 5.6057 5.5995 5.6165 5.6448 5.5974 5.6609 5.6363 5.6352 5.5986 5.5797 5.5501 5.6238 5.6462 5.6423 5.7021 5.5481 5.7078 5.6055 5.5324 5.7417 5.6776 5.5924 5.5691 5.5666 5.7287 5.6312 5.6017 5.6626 5.6436 5.6634 5.6132 5.5441 5.6363 -