A survey of 1,347 Massachusetts high school students showed that the mean number of hours these students reported watching crime TV shows was 2.4 hours with standard deviation S=0.8. Using this information… a. Calculate the 95% confidence interval. b. Calculate the 99% confidence interval.

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

Evaluate the expression. (9 + 5)(3 + 2)0

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?