6.36 Accuracy of a laboratory scale. To assess the accuracy of a laboratory scale, a standard weight known to weigh 10 grams is weighed repeatedly. The scale readings are Normally distributed with unknown mean (this mean is 10 grams if the scale has no bias), Tha standard deviation of the scale readings is known to be 0.0002 gram. (a) The weight is measured six times. The mean result is 10.0023 grams. Give a 99% confidence interval for the mean of repeated measurements of the weight.

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I need some help with my stats homework. It comes from introduction to the practice of Statistics Ninth edition exercise 6.36
6.36 Accuracy of a laboratory scale. To assess the
to weigh 10 grams is weighed repeatedly. The scale
(this mean is 10 grams if the scale has no bias). The
accuracy of a laboratory scale, a standard weight known
readings are Normally distributed with unknown mean
standard deviation of the scale readings is known to be
tru:
a
2.2
to weigh 10 grams is weighed repeatedly. The scale
(this mean is 10 grams if the scale has no
standard deviation of the scale readings is known to 1
0.0002 gram.
bias). The
(a) The weight is measured six times. The mean resiult
is 10.0023 grams. Give a 99% confidence interval for the
mean of repeated measurements of the weight.
Transcribed Image Text:6.36 Accuracy of a laboratory scale. To assess the to weigh 10 grams is weighed repeatedly. The scale (this mean is 10 grams if the scale has no bias). The accuracy of a laboratory scale, a standard weight known readings are Normally distributed with unknown mean standard deviation of the scale readings is known to be tru: a 2.2 to weigh 10 grams is weighed repeatedly. The scale (this mean is 10 grams if the scale has no standard deviation of the scale readings is known to 1 0.0002 gram. bias). The (a) The weight is measured six times. The mean resiult is 10.0023 grams. Give a 99% confidence interval for the mean of repeated measurements of the weight.
šcale is accurate? Explain your
(c) How many measurements must be averaged to get a
margin of error of ±0.0001 with 99% confidence?
EC 6.37 More than one confidence in
Transcribed Image Text:šcale is accurate? Explain your (c) How many measurements must be averaged to get a margin of error of ±0.0001 with 99% confidence? EC 6.37 More than one confidence in
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