A company selects a random sample of 75 employees and records the proportion of employees who have been with the company for at least 10 years. A 95% confidence interval for the true proportion was computed to be (0.18, 0.23). If the company wants to cut its margin of error in half, how many employees should it survey? ⇒ 300

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?