Subm Test 8 of 25 7 complete)
This Test: 100 pts possible
Use the given degree of confidence and sample data to construct a confidence interval for the population mean pl. Assume that the population has a normal distribution
Thirty randomly selected students took the calculus final. If the sample mean was 79 and the standard deviation was 13 2 construct a 99% confidence interval for the mean score of all trenten

Students buying lunch at rockwell elementary school yesterday chose either burritos or pizza. 185 students chose burritos and 252 chose pizza. 1. estimate the number of students who brought lunch by rounding each number to the nearest hundred. 2. estimate how many students bought lunch by rounding each number to the nearest ten. 3. find the total number of students who brought lunch. which of your estimates is closer to the actual total? explain. 4. draw a figure on a sheet of paper. estimate how many pennies will fit inside the figure. check your prediction using pennies.

Which of the following three dimensional figures has a circle as it’s base

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297