An Experiment Was Performed on a Certain Metal to Determine

question 109

Short Answer

An experiment was performed on a certain metal to determine if the strength is a function of heating time. Partial results based on a sample of 10 metal sheets are given below. The simple linear regression equation is ŷ = 1 + 1X. The time is in minutes, the strength is measured in pounds per square inch, MSE = .5, Σx = 30, and Σx² = 104. Determine the 95 percent confidence interval for the average strength of a metal sheet when the average heating time is 2.5 minutes.

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Definitions:

Genes

Units of heredity made up of DNA that carry information for the development, function, and maintenance of organisms.

Prenatal Development

is the process of growth and development within the womb from conception to birth.

Weeks Pregnant

A way of measuring the duration of pregnancy, counting from the first day of the last menstrual period to estimate the stage of gestation.