Homework Homework 3 Question 31 5 2 15 T Assume A Member Is Selected At Random From The Population Represented By Th 1 (23.42 KiB) Viewed 16 times
please help with a and b on second part of question thanks
Homework Homework 3 Question 31 5 2 15 T Assume A Member Is Selected At Random From The Population Represented By Th 2 (20.15 KiB) Viewed 16 times
= Homework: Homework 3 Question 31, 5.2.15-T Assume a member is selected at random from the population represented by the graph. Find the probability that the member selected at random is from the shaded region of the graph. Assume the variable x is normally distributed. HW Score: 76.92%, 68.46 of 89 points O Points: 0 of 1 Pregnancy Length in a Population of New Mothers 283<x<292 230 283 292 Pregnancy length (in days) p=270 a=12 The probability that the member selected at random is from the shaded area of the graph is (Round to four decimal places as needed) Save Q 2
Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 625? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? Click to view page 1 of the standard normal table Click to view page 2 of the standard normal table (a) Approximately % of the SAT verbal scores are less than 625. (Round to two decimal places as needed.) ACCORD
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!