Data were collected on the amount spent by 64 customers for lunch at a major houston restaurant. these data are contained in the file named houston. based upon past studies the population standard deviation is known with σ = $6.a. at 99% confidence, what is the margin of error? b. develop a 99% confidence interval estimate of the mean amount spent for lunch.

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Find cot x if sin x cot x csc x = √2