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Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean...

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Basic Math

Bob Nale is the owner of Nale’s Quick Fill. Bob would like toestimate the mean number of gallons of gasoline sold to hiscustomers. Assume the number of gallons sold follows the normaldistribution with a population standard deviation of 2.00 gallons.From his records, he selects a random sample of 65 sales and findsthe mean number of gallons sold is 9.10.

a.

What is the point estimate of the population mean?(Round your answer to 2 decimal places.)

  Point estimate   
b.

Determine a 98% confidence interval for the population mean.(Use z Distribution Table.) (Round your answers to 2decimal places.)

  Confidence intervaland  .

Answer & Explanation Solved by verified expert
4.0 Ratings (511 Votes)
Solution Given that 910 200n 65a At 98    See Answer
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