To estimate the mean height µ of male students on your campus, you will measure an SRS of students. You know from government data that the standard deviation of the heights of young men is about 2.4 inches. You want your sample mean x¯¯¯ to estimate µ with an error of no more than one-half inch in either direction. What standard deviation (±0.0001) must x¯¯¯ have so that 99.7% of all samples give an x¯¯¯ within one-half inch of µ? (Use the 68-95-99.7 rule

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.

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.