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A dentist wants to find the average time taken by one of her hygienists to take...

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Question

Statistics

A dentist wants to find the averagetime taken by one of her hygienists to take X-ray and clean thetooth for her patients. She recorded the time to serve 24 randomlyselected patients by the hygienist. The data of this experiment aresave in the column “Time” of the SPSS file .

Time
36.80
39.80
38.60
38.30
35.80
32.60
38.70
34.50
37.00
32.00
40.90
33.80
37.10
31.00
35.10
38.20
36.60
38.80
39.60
39.70
35.10
38.20
32.70
40.50

  1. Compute the appropriate point estimate for population (true)mean time taken by this hygienist.
  1. Construct a 98% confidence interval for the true average timetaken by this hygienist.

  1. The standard average for all the hygienists for this type ofjob is 34 minutes. Do the sample data provides evidence that theaverage time taken by the hygienist is longer than standard averagefor this job type? Use 1% significancelevel.                

Please write how could I do it in SPSS

Answer & Explanation Solved by verified expert
3.9 Ratings (571 Votes)
Ans aSPSS output for the data isDescriptive StatisticsNMinimumMaximumMeanStd DeviationTime2431004090367250283614Valid N listwise24point estimate of mean is 3672steps in SPSS put the    See Answer
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