Aclass is composed of 35 psychology majors and 35 speech majors. if 18 of the 20 people who enter the room are speech majors, is that sufficient evidence to argue that speech majors are abnormally early to class, compared to psychology majors?

Find the value of x that will make l ll m

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit

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?