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In a study of marital satisfaction, a random sample of 12 couples married for between five and fifteen years was obtained. Each couple was interviewed by the researcher and rated on a Marital Cohesion (MC) scale. MC MC2 14 196 9 81 7 49 14 196 15 225 13 169 10 100 17 289 11 121 18 324 14 196 14 196 Σ- 156 Σ(x2 ) -2142 %D A. What is the mean of Marital Cohesion? 1/2 B. What is the standard deviation of Scores for hypothesis testing? (Round to the nearest hundredths) C. Is there a significant difference between the sample mean of scores and the population mean of 15? Carry out all 9 steps of the hypothesis testing.

In a study of marital satisfaction, a random sample of 12 couples married for between five and fifteen years was obtained. Each couple was interviewed by the researcher and rated on a Marital Cohesion (MC) scale. MC MC2 14 196 9 81 7 49 14 196 15 225 13 169 10 100 17 289 11 121 18 324 14 196 14 196 Σ- 156 Σ(x2 ) -2142 %D A. What is the mean of Marital Cohesion? 1/2 B. What is the standard deviation of Scores for hypothesis testing? (Round to the nearest hundredths) C. Is there a significant difference between the sample mean of scores and the population mean of 15? Carry out all 9 steps of the hypothesis testing.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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In a study of marital satisfaction, a random sample of 12 couples married for between five and fifteen years was obtained. Each couple was interviewed by the researcher and rated on a Marital Cohesion (MC) scale. MC MC2 14 196 9 81 7 49 14 196 15 225 13 169 10 100 17 289 11 121 18 324 14 196 14 196 Σ- 156 Σ(x2)=2142 A. What is the mean of Marital Cohesion? 1/2 B. What is the standard deviation of Scores for hypothesis testing? (Round to the nearest hundredths) C. Is there a significant difference between the sample mean of scores and the population mean of 15? Carry out all 9 steps of the hypothesis testing.
Transcribed Image Text:In a study of marital satisfaction, a random sample of 12 couples married for between five and fifteen years was obtained. Each couple was interviewed by the researcher and rated on a Marital Cohesion (MC) scale. MC MC2 14 196 9 81 7 49 14 196 15 225 13 169 10 100 17 289 11 121 18 324 14 196 14 196 Σ- 156 Σ(x2)=2142 A. What is the mean of Marital Cohesion? 1/2 B. What is the standard deviation of Scores for hypothesis testing? (Round to the nearest hundredths) C. Is there a significant difference between the sample mean of scores and the population mean of 15? Carry out all 9 steps of the hypothesis testing.
Summary of the 9 Steps for Hypothesis Testing 1. Null and alternative hypothesis. 2. Two-tailed test. 3. Select a significant level alpha. 4. Determine T test OR Z test. 5. Terit OR Zerit (Draw a graph) 6. Calculate Tobt or Zobt. 7. Check whether the observed value (obt) falls in the critical region. 8. Reject or Fail to Reject Null Hypothesis. 9. Therefore, there isa statisticallysignificantdifference between the sample mean and the population mean OR there is no significant difference between the two means.
Transcribed Image Text:Summary of the 9 Steps for Hypothesis Testing 1. Null and alternative hypothesis. 2. Two-tailed test. 3. Select a significant level alpha. 4. Determine T test OR Z test. 5. Terit OR Zerit (Draw a graph) 6. Calculate Tobt or Zobt. 7. Check whether the observed value (obt) falls in the critical region. 8. Reject or Fail to Reject Null Hypothesis. 9. Therefore, there isa statisticallysignificantdifference between the sample mean and the population mean OR there is no significant difference between the two means.
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