![jwoody5495](/avatars/14971.jpg)
jwoody5495
20.07.2019 •
Mathematics
Identify the solution for the system of equations graphed here. a) (1, 1) b) (-1, 1) c) (1, -1) d) (-1, -1)
Solved
Show answers
More tips
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
- C Computers and Internet Отправляем смс через интернет: легко и просто...
- L Leisure and Entertainment The Best Film of 2010: A Look Back at the Academy Awards...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
Answers on questions: Mathematics
- M Mathematics Evaluate f (-2) where f (x) is the piecewise function graphed below. f (-2) =...
- M Mathematics La Cu You can afford monthly deposits of $250 into an account that pays 4.8% compounded monthly. How long will it be until you have $11,900 to buy a boat? Att...
- M Mathematics Help, please answer this!!...
- M Mathematics Help me pleaseee geometry help...
- M Mathematics Please help it’s very important:::;;:;...
- M Mathematics I need an answer Immediately...
- M Mathematics PLEASE HELP WILL MARK BRAINIEST AND NO LINKS...
- M Mathematics 1. A tube feeding formula is 12% protein by volume. The patient is getting 1500 ml of this formula per day How much protein is the patientreceiving?...
- M Mathematics The question is on the picture...
- M Mathematics 15 square inch room with 1 ft :8ft...
Ответ:
Ответ:
irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives
z = (80-78)/12 = 1/6 = .1667
now, find what percentile a z score of 1/6 correlates to in the normal distribution.
a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364
the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.
the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.