Avoiding vaccinations during flu season can help you cut down the risk of contracting this communicable

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

If square root x = -7, then x= -49 true or false