5. Airport authority of MADRAS claims that the average time taken by their passengers to complete the boarding process is less than the average of all other Airports in the country 60 mins. A random sample passengers, who used the Madras Airport in a particular day, gave the following boarding time distribution. (' Time taken to complete No of persons the boarding process(mins) 8. 16 0-20 20-40 40-60 39 60-80 38 80-100 15 Calculate the arithmetic mean and standard deviation of this distribution and use these values to test their claim at 5% level of significance. Comment their claim based on your investigation.

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5. Airport authority of MADRAS claims that the average time taken by their passengers to complete the boarding
process is less than the average of all other Airports in the country 60 mins. A random sample passengers, who used
the Madras Airport in a particular day, gave the following boarding time distribution. ('
Time taken to complete
No of persons
the boarding process(mins)
8.
16
0-20
20-40
40-60
39
60-80
38
80-100
15
Calculate the arithmetic mean and standard deviation of this distribution and use these values to test their claim
at 5% level of significance. Comment their claim based on your investigation.
Transcribed Image Text:5. Airport authority of MADRAS claims that the average time taken by their passengers to complete the boarding process is less than the average of all other Airports in the country 60 mins. A random sample passengers, who used the Madras Airport in a particular day, gave the following boarding time distribution. (' Time taken to complete No of persons the boarding process(mins) 8. 16 0-20 20-40 40-60 39 60-80 38 80-100 15 Calculate the arithmetic mean and standard deviation of this distribution and use these values to test their claim at 5% level of significance. Comment their claim based on your investigation.
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