Question
Next TWO questions (1 and 2) are related 1) A recent study showed that the average cost of getting a four-year college degree in a
Next TWO questions (1 and 2) are related
1) A recent study showed that the average cost of getting a four-year college degree in a Midwestern state is $46,200.The standard deviation of the cost of a four-year degree is $12,360.Treat these figures as population parameters.A random sample of 144 recent graduates is selected from across the Midwest.The probability that the mean obtained from this sample falls within $1,500 from the population mean is:
a 0.8558 b 0.8130 c 0.7724 d 0.7337
2) In the previous question, the middle interval which includes 95% of the means from random samples of 144 students is:
a (45948, 46290) b (44181, 48219) c (42414, 50148) d (40717, 52154)
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started