Well-known racial differences in blood pressure exist between Caucasian and African American adults. These differences generally do not exist between Caucasian and African American children. Because aldosterone levels have been related to blood-pressure levels in adults in previous research, an investigation was performed to look at aldosterone levels among African American children and Caucasian children.(Assume that plasma-aldosterone levels can be measured exactly and no continuity correction is necessary. Round your answers to two decimal places.)USE SALT(a) If the mean plasma-aldosterone level in African American children was 235 pmol/L with a standard deviation of 213 pmol/L, then what percentage of African American children have levels ≤ 300 pmol/L if normality is assumed?(b) If the mean plasma-aldosterone level in Caucasian children is 398 pmol/L with standard deviation of 253 pmol/L, then what percentage of Caucasian children have levels ≤ 300 pmol/L if normality is assumed?Plasma-aldosterone concentration (pmol/liter)(c) The distribution of plasma-aldosterone concentration in 53 Caucasian and 46 African American childrenPlasma-aldosterone concentrations in 53 Caucasian and 46 African Americanchildren. Values within the shaded area were undetectable (< 50 pmol/L). Thesolid horizontal lines indicate the mean values, and the broken horizontal linesindicate the mean ±se. The concept of standard error (se) is discussed in Chapter6.120011001000900800700600500400300%200100%HCaucasians........shown in the figure below.African Americans. ⒸDoes the assumption of normality seem reasonable? Why or why not? (Hint: Qualitatively compare the observed number of children who have levels ≤ 300 pmol/L with the expected number in each group under the assumption of normality. Give your answers in percent.)

Normal distribution has mean, median and mode coincide at same point. It shows the distribution of…

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MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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