2.The quality control manager of a tyre company has sample of 100 tyres and has found the mean lifetime to be 30214 km. The population standard deviation is 860 km. Construct a 95% confidence interval for mean life time for this particular brand of tyres.
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Answer:
Number of tyres =100
Therefore,
30214 /860
kindly note the formula you will get the answer
Step-by-step explanation:
thanku user ☺
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