Find p15. which is the iq score separating the bottom 15% from the top 85%. assume the scores are normally distributed with a mean of 100 and a standard deviation of 15. a. 82.5
b. 83.3
c. 84.0
d. 84.6

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)