annamariaafowyhrq
22.09.2020 •
Mathematics
Mary and Jane both took PSY230 last semester but they were in two different sections taught by different professors. Mary's class had a mean grade of 83 points with a standard deviation of 5 points while Jane's class had a mean grade of 85 points with a standard deviation of 10 points. Both Mary and Jane earned 88 points. Who did better in class? (Hint: We want to know Mary's and Jane's positions in the grade distributions of their respective classes.)
Solved
Show answers
More tips
- S Science and Technology How to Check a Barcode: Unique Product Identifier...
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics Solve 247 × 82 using an area modelcan anyone me pls...
- M Mathematics How to check [tex]x - \frac{2}{3 } \frac{1}{4} [/tex]...
- M Mathematics Ihave math homework and i’ll stupid what i do...
- M Mathematics What is 5^2 + b -1x b=6 and x=5 show work...
- M Mathematics what is the length of the line segment with endpoints (12, 6) and (12,−9) ? enter your answer in the box....
- M Mathematics Leah is writing an equivalent equation which solves for y. what should be her next step? 3x+4y=8 3x-3x+4y=8-3x 4y=8-3x...
- M Mathematics If your scale is 2 centimeters for every 1 meter. how much centimeters are in 3.25 meters?...
- M Mathematics On an average day, americans spend $1958904.00 buying video games. of this total $1167123.00 is spent on sony playstation games. in one week how much do americans spend on sony playstation...
- M Mathematics Student wrote the equation of this line as y=1/3x. what mistake did she make?...
- M Mathematics What is the solution for 5x + 2/5 using a replacement set of {1/5, 2/5 7/10}?...
Ответ:
x = 1/ 3
Step-by-step explanation:
to solve this system of equation we have
2/3 x - 4 = -2
collect the like terms or combine the like terms
2/3x = -2 + 4
2 / 3x = 2
the next step is to cross multiply
2 x 1 = 2 (3x)
2 = 6x
divide both sides by the coefficient of x which is 6
2/ 6 = 6x/ 6
x = 2/6
x = 1/ 3