Question

You measure 44 textbooks' weights, and find they have a mean weight of 77 ounces. Assume the population standard deviation is 10.9 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places.

Answer #1

You measure 39 textbooks' weights and find they have a mean
weight of 44 ounces. Assume the population standard deviation is
12.7 ounces. Based on this, construct a 99% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places
I am 99% confident that the mean weight of textbooks is between and
ounces.
You measure 46 textbooks' weights, and find they have a mean
weight of 38 ounces. Assume the population standard deviation...

You measure 50 textbooks' weights, and find they have a mean
weight of 77 ounces. Assume the population standard deviation is
12.8 ounces. Based on this, construct a 90% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places
< μ <

You measure 48 textbooks' weights, and find they have a mean
weight of 78 ounces. Assume the population standard deviation is
2.1 ounces. Based on this, construct a 95% confidence interval for
the true population mean textbook weight. Give your answers as
decimals, to two places < μ <

You measure 25 textbooks' weights, and find they have a mean
weight of 30 ounces. Assume the population standard deviation is
5.2 ounces. Based on this, construct a 95% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places
_____ < μ < _____

You measure 31 textbooks' weights, and find they have a mean
weight of 52 ounces. Assume the population standard deviation is
3.5 ounces. Based on this, construct a 99% confidence interval for
the true population mean textbook weight. Give your answers as
decimals, to two places [,]

You measure 34 textbooks' weights, and find they have a mean
weight of 73 ounces. Assume the population standard deviation is
11.4 ounces. Based on this, construct a 90% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places

You measure 27 textbooks' weights, and find they have a mean
weight of 40 ounces. Assume the population standard deviation is 13
ounces. Based on this, construct a 90% confidence interval for the
true population mean textbook weight.
Give your answers as decimals, to two places

You measure 25 textbooks' weights, and find they have a mean
weight of 63 ounces. Assume the population standard deviation is
5.5 ounces. Based on this, construct a 90% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places

You measure 29 textbooks' weights, and find they have a mean
weight of 71 ounces. Assume the population standard deviation is
14.1 ounces. Based on this, construct a 99% confidence interval for
the true population mean textbook weight. Give your answers as
decimals, to two places.

You measure 32 textbooks' weights, and find they have a mean
weight of 35 ounces. Assume the population standard deviation is
12.1 ounces. Based on this, construct a 95% confidence interval for
the true population mean textbook weight. Use z = 2 (rather than
1.96) for your calculations. Give your answers as decimals, to two
places (,)

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