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The tendency of the lungs to return to their initial size after stretching is ________.

If the dimension of matrix A is 13 x 50 and the dimension of matrix B is 50 x 7, find the dimension of matrix AB.

Determine the cumulative effective dose (CumEfD) limit to the whole body of an occupationally exposed person who is 43 years old:

A single six-sided die is rolled. Find the probability of rolling a number LESS than 3.  

Calculate the mean, meadian, range and sample standard deviation for the following data set:   19  25  44  50  56  78   Mean [a] (to one decimal place) Median [b] Range [d] Sample standard deviation [c] (to two decimal places)  

Match the sampling method description on the left with the sampling technique on the right.

1.2.2 Yintoni umbongo? (2)

When I cross a red flowered plant with a white flowered plant, the offspring all produce pink flowers. This is an example of _______.

The most commonly reported purpose of sexual fantasy during intercourse for both men and women was 

Write a function called calc_average that takes a string representing a filename of the following format, for example: Smith 82   Jones 75   Washington 91   The function should calculate and return the class average from the data in the file.