Breast‑feeding mothers secrete calcium into their milk. Some of the calcium may come from their bones, so mothers may lose bone mineral. Researchers measured the percent change in mineral content of the spines of 47 mothers during three months of breast‑feeding. The data are given in the table.Percent Change in Mineral Content−4.7−2.5−4.9−2.7−0.8−5.3−8.3−2.1−6.8−4.32.2−7.8−3.1−1.0−6.5−1.8−5.2−5.7−7.0−2.2−6.5−1.0−3.0−3.6−5.2−2.0−2.1−5.6-4.4-3.3−4.0−4.9−4.7−3.8−5.9-2.5-0.3−6.2−6.81.70.3-2.30.4−5.30.2-2.2-5.1 The researchers are willing to consider these 47 women to be an SRS from the population of all nursing mothers. Suppose that the percentage change in this population has standardard deviation ?=2.5% vitamin D‑receptor genotype," American Journal of Clinical Nutrition, 67 (1998), pp. 685–692. Use a 90% confidence interval to estimate the mean percent change in the population.

The data on percent change in mineral content is provided.Sample size, Population standard…

Answered: Breast‑feeding mothers secrete calcium…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Breast‑feeding mothers secrete calcium into their milk. Some of the calcium may come from their bones, so mothers may lose bone mineral. Researchers measured the percent change in mineral content of the spines of 47 mothers during three months of breast‑feeding. The data are given in the table.

Percent Change in Mineral Content

−4.7	−2.5	−4.9	−2.7	−0.8	−5.3	−8.3	−2.1	−6.8	−4.3
2.2	−7.8	−3.1	−1.0	−6.5	−1.8	−5.2	−5.7	−7.0	−2.2
−6.5	−1.0	−3.0	−3.6	−5.2	−2.0	−2.1	−5.6	-4.4	-3.3
−4.0	−4.9	−4.7	−3.8	−5.9	-2.5	-0.3	−6.2	−6.8	1.7
0.3	-2.3	0.4	−5.3	0.2	-2.2	-5.1

The researchers are willing to consider these 47 women to be an SRS from the population of all nursing mothers. Suppose that the percentage change in this population has standardard deviation ?=2.5% vitamin D‑receptor genotype," American Journal of Clinical Nutrition, 67 (1998), pp. 685–692.

Use a 90% confidence interval to estimate the mean percent change in the population.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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