mean baseline LDL level u among adult diabetics who might benefit from taking Avandia, assuming that o is the same in this population as in the general population. One-Sample Z The assumed standard deviation = 30 Мean SE Mean 99% CI 964 125.600 0.966 (123.111, 128.089) (a) Express this confidence interval as a sentence written in the context of this problem. (b) One of the “simple conditions" for inference about a population mean is that the population standard deviation o is known. Explain why this assumption may not be reasonable in this specific example.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter4: Equations Of Linear Functions
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mean baseline LDL level u among adult diabetics who
might benefit from taking Avandia, assuming that o is the
same in this population as in the general population.
One-Sample Z
The assumed standard deviation = 30
Mean
SE Mean
99% CI
964
125.600
0.966 (123.111, 128.089)
(a) Express this confidence interval as a sentence written
in the context of this problem.
(b) One of the “simple conditions" for inference about a
population mean is that the population standard deviation
o is known. Explain why this assumption may not be
reasonable in this specific example.
Transcribed Image Text:mean baseline LDL level u among adult diabetics who might benefit from taking Avandia, assuming that o is the same in this population as in the general population. One-Sample Z The assumed standard deviation = 30 Mean SE Mean 99% CI 964 125.600 0.966 (123.111, 128.089) (a) Express this confidence interval as a sentence written in the context of this problem. (b) One of the “simple conditions" for inference about a population mean is that the population standard deviation o is known. Explain why this assumption may not be reasonable in this specific example.
14.33 Avandia and cholesterol. Drug maker
GlaxoSmithKline investigated the potential impact of its
oral antidiabetic drug Avandia (rosiglitazone maleate) on
the blood lipid levels of adults diagnosed with diabetes
who might benefit from taking Avandia. The mean
baseline low-density lipoprotein (LDL, also known as
"bad" cholesterol) level for a random sample of 964 such
patients was X= 125.6 milligrams per
The distribution of LDL levels in the adult population is
known to be close to Normal with standard deviation
o = 30 mg/dl." Here is a 99% confidence interval for the
deciliter (mg/dl).
Transcribed Image Text:14.33 Avandia and cholesterol. Drug maker GlaxoSmithKline investigated the potential impact of its oral antidiabetic drug Avandia (rosiglitazone maleate) on the blood lipid levels of adults diagnosed with diabetes who might benefit from taking Avandia. The mean baseline low-density lipoprotein (LDL, also known as "bad" cholesterol) level for a random sample of 964 such patients was X= 125.6 milligrams per The distribution of LDL levels in the adult population is known to be close to Normal with standard deviation o = 30 mg/dl." Here is a 99% confidence interval for the deciliter (mg/dl).
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