Asample of 27 employees for the department of health and human services has the following salaries, in thousands of dollars. assuming normality use excel find the 98% confidence interval for the true mean salary. in thousands of dollars. round two decimal places and use increasing order
salary : 71,70,69,65,72,69,72,72,71,72,73,66 ,68,71,71,69,70,72,71,68,68,75,73,7 1,66,70

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

How do i multiply two digit numbers