The distribution of SAT scores of all college-bound seniors taking the SAT in 2014 was approximately normal with mean i = 1497 and standard deviation o = 322.
A certain test-retake preparation course is designed for students whose SAT scores are in the lower 25%
of those who take the test in a given year.
What is the maximum SAT score in 2014 that meets the course requirements?

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the