The average house has 13 paintings on its walls.  Is the mean different for houses owned by teachers? The data show the results of a survey of 13 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 10, 13, 13, 14, 12, 12, 13, 11, 14, 11, 12, 14, 11 What can be concluded at the  αα = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean  The null and alternative hypotheses would be:       H0:H0:  ? μ p  Select an answer < ≠ > =         H1:H1:  ? μ p  Select an answer = > ≠ <     The test statistic ? z t  =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal plac

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The average house has 13 paintings on its walls.  Is the mean different for houses owned by teachers? The data show the results of a survey of 13 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal.

10, 13, 13, 14, 12, 12, 13, 11, 14, 11, 12, 14, 11

What can be concluded at the  αα = 0.05 level of significance?

  1. For this study, we should use Select an answer z-test for a population proportion t-test for a population mean 
  2. The null and alternative hypotheses would be:     

 H0:H0:  ? μ p  Select an answer < ≠ > =       

 H1:H1:  ? μ p  Select an answer = > ≠ <    

  1. The test statistic ? z t  =  (please show your answer to 3 decimal places.)
  2. The p-value =  (Please show your answer to 4 decimal places.)
  3. The p-value is ? ≤ >  αα
  4. Based on this, we should Select an answer fail to reject accept reject  the null hypothesis.
  5. Thus, the final conclusion is that ...
    • The data suggest the populaton mean is significantly different from 13 at αα = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in teachers' houses is different from 13.
    • The data suggest that the population mean number of paintings that are in teachers' houses is not significantly different from 13 at αα = 0.05, so there is insufficient evidence to conclude that the population mean number of paintings that are in teachers' houses is different from 13.
    • The data suggest the population mean is not significantly different from 13 at αα = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in teachers' houses is equal to 13.
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