Proportion of overweight children

Reference no: EM131010229

The paper referenced in the previous exercise also included data on left atrial diameter for children who were considered overweight. For these children, left atrial diameter was approximately normally distributed with a mean of 28 mm and a standard deviation of 4.7 mm.

a. Approximately what proportion of overweight children has left atrial diameters less than 25 mm?

b. Approximately what proportion of overweight children has left atrial diameters greater than 32 mm?

c. Approximately what proportion of overweight children has left atrial diameters between 25 and 30 mm?

d. What proportion of overweight children has left atrial diameters greater than the mean for healthy children?

Reference no: EM131010229

Questions Cloud

Gallons and standard deviation : A gasoline tank for a certain car is designed to hold 15 gallons of gas. Suppose that the variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 15.0 gallons and standard d..

Preceding problem produces corks : Suppose that there are two machines available for cutting corks. The machine described in the preceding problem produces corks with diameters that are approximately normally distributed with mean 3 cm and standard deviation 0.1 cm.

Distribution of the diameter of the corks : A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mean 3 cm and standard deviation 0.1 cm.

Determine the proportion of those who signed the petition : As part of a curriculum review, the psychology department would like to select a simple random sample of 20 of last year's 140 graduates to obtain information on how graduates perceived the value of the curriculum. Describe two different methods t..

Proportion of overweight children : a. Approximately what proportion of overweight children has left atrial diameters less than 25 mm? b. Approximately what proportion of overweight children has left atrial diameters greater than 32 mm?

Define hyperbolic cosine function : Hyperbolic functions are similar to trigonometric functions. Define hyperbolic cosine, denoted cosh(x) as cosh(x) = (ex + e-x) / 2, and define hyperbolic sine, denoted sinh(x), as sinh(x) = (ex + e-x) / 2.

Does living in the south cause high blood pressure : Does living in the South cause high blood pressure? Data from a group of 6278 whites and blacks questioned in the Third National Health and Nutritional Examination Survey between 1988 and 1994 indicates that a greater percentage of Southerners have..

What in particular stood out or stick with you : Read the attach chapters and write 250 word "what in particular stood out/stick with you?" and why

How certain types of leadership : You will produce a written report that critically assesses and evaluates your company and it's leadership using Value Systems Theory (vMEME) and all the leadership theories it contains.

User Account

All Pages