vanessacox45
04.09.2019 •
Mathematics
At a college the scores on the chemistry final exam are approximately normally distributed, with a mean of 75 and a standard deviation of 12. the scores on the calculus final are also approximately normally distributed, with a mean of 80 and a standard deviation of 8. a student scored 81 on the chemistry final and 84 on the calculus final. relative to the students in each respective class, in which subject did this student do better?
Solved
Show answers
More tips
- F Food and Cooking How to Make Chebureki: A Delicious Recipe for Russian Street Food...
- A Animals and plants Unraveling the Mystery of Loch Ness: What Does the Loch Ness Monster Look Like?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics Simplify the following expression. 6x + 5× + 4(2×)...
- M Mathematics Jason, wendy, kevin, and michelle each entered a frog in an annual frog-jumping contest. each of their frogs – hippy, hoppy, bounce, and pounce – placed first, second, or third...
- M Mathematics Solve -np-90 30 show your work 5m-3h=45 show your work !...
- M Mathematics Write the equations included in the same set of related facts as 6x8=48...
- M Mathematics Joe’s balance in his checking account at the beginning of the month was $132. at the end of the month, it was 15.3% higher. what was his balance at the end of the month?...
- M Mathematics The flat head rail tunnel in montana is about 7 3/4 miles long. a train travels at a speed of 3/4 miles per minute. how long will it take the train to go through the tunnel?...
- M Mathematics What are the steps for (4.6 - 9.2) - 0.8 + 5.4...
- M Mathematics Write in vertex form (by completing the square)y=4x2+40x+96...
- M Mathematics Susie divided 9-pound bag of apples into 5 equal piles. how many pounds of apples are in each pile...
- M Mathematics Today, 5 friends went out for lunch. their total bill was $33.94 , including tax and gratuity. one of them ordered only soda and needed to pay only $1.86 . the other 4 friends ordered...
Ответ:
Using z-scores, it is found that due to equal z-scores, the student performed the same relative to the classes in each subject.
-----------------------
Z-score:
In a set with mean and standard deviation , the z-score of a measure X is given by: The Z-score measures how many standard deviations the measure is from the mean. Relative to the respective class, the student did better in the discipline in which his grade had a higher z-score.-----------------------
Chemistry:
Mean of 75 means that Standard deviation of 12 means that Grade of 81 means thatThe z-score is:
-----------------------
Calculus:
Mean of 80 means that Standard deviation of 8 means that Grade of 84 means thatThe z-score is:
Due to equal z-scores, the student performed the same relative to the classes in each subject.
A similar problem is given at link
Ответ:
Calculus
Step-by-step explanation:
Given
Chemistry score are normally distributed with a mean score of 75 and standard deviation 12
Calculus score
For chemistry
For calculus
From Z score it is clear that student score better marks in calculus.
Ответ:
75
Step-by-step explanation:
84/100=63/x
cross multiply
x=6300/84
75
brainlest plz