Suppose that from the past experience a professor knows that the test score of a student taking his final examination is a random variable with mean 73 and standard deviation 10. how many students would have to take the examination to ensure, with probability at least 0.94, that the class average would be within 3 of 73?

The triangles are similar. what is the value of x? x=

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Aline passes through 3,7 and 6,9 what equation represents the line