The pulse rates of 140 randomly selected adult males vary from a low of 40 bpm to a high of 108 bpm. find the minimum sample size required to estimate the mean pulse rate of adult males. assume that we want 98%confidence that the sample mean is within 3 bpm of the population mean. find the sample size using the range rule of thumb to estimate sigma.

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

How to use order of operation in 20 divide by 4 multiply 5 = 1

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.