An analysis of 100 personal injury claims made upon a motor insurance company revealed that loss or injury in respect of an eye, an arm or a leg occurred in 30, 50 and 70 cases respectively. Claims involving the loss or injury to two of these members numbered 42. How many claims involved loss or injury to all three members? (You may assume that one or other of the three members was mentioned in each of the 100 claims.)

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95