A large automobile manufacturing plant produces 1200 new cars every day. A quality-control inspector checks a random sample of 90 cars from one day’s production and finds that 12 of them have minor paint flaws.Report the standard error of the sample proportion Report the margin of error for the population proportion with 95% confidence. Find the 95% large-sample confidence interval for the population proportion.
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Adi S.
1) A small automobile manufacturing plant produces 1200 new cars every day. A quality control inspector checks a random sample of 90 cars from one day's production and finds that 12 of them have scratches on the interior. a) Calculate and interpret a 95% confidence interval for the proportion of all cars produced that day with scratches on the interior. Be sure to show that the conditions for calculating a confidence interval for a proportion are satisfied.
Shaiju T.
A large automobile manufacturing plant produces 1200 new cars every day. A quality-control inspector checks a random sample of 90 cars from one day's production and finds that 12 of them have minor paint flaws. 1) Construct and interpret a 90% confidence interval by completing the statement below. We are % confident that the true population proportion for the cars with minor paint flaws are between and 2)A 99% confidence interval is narrower or wider than a 90% confidence interval?
Sri K.
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