Question
A math professor notices that scores from a recent exam are Normally distributed with a mean...
A math professor notices that scores from a recent exam are Normally distributed with a mean of 65 and a standard deviation of 9.
(a) What score do 25% of the students exam scores fall below?
(b) Suppose the professor decides to grade on a curve. If the professor wants 16% of the students to get an A, what is the minimum score for an A?
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A math professor notices that scores from a recent exam are normally distributed with a mean...
A math professor
notices that scores from a recent exam are normally distributed
with a mean of 72 and a standard deviation of 5.
(a) What score do 75% of the students exam scores fall
below?
Answer:
(b) Suppose the professor decides to grade on a curve. If the
professor wants 2.5% of the students to get an A, what is the
minimum score for an A?
Answer:
(1 pt) A math professor notices that scores from a recent exam are normally distributed with...
(1 pt) A math professor notices that scores from a recent exam
are normally distributed with a mean of 65 and a standard deviation
of 8. Answer the following questions using integer values. (a) What
score do 25% of the students exam scores fall below? Answer: (b)
Suppose the professor decides to grade on a curve. If the professor
wants 2.5% of the students to get an A, what is the minimum score
for an A? Answer:
A math professor notices that scores from a recent exam are Normally distributed with a mean...
A math professor notices that scores from a recent
exam are Normally distributed with a mean of 72 and a standard
deviation of 8. Suppose the professor decides to grade on a curve.
If the professor wants 0.15% of the students to get an A, what is
the minimum score for an A?
A math professor notices that scores from a recent test are normally distributed with a mean...
A math professor notices that scores from a recent test are
normally distributed with a mean of 70 and a standard deviation of
4.
(a) What score do 75% of the students test scores fall
below?
Answer:
(b) Suppose the professor decides to grade on a curve. If the
professor wants 2.5% of the students to get an A, what is the
minimum score for an A?
Answer:
The scores on the SAT college entrance exam are normally distributed with a mean Math score...
The scores on the SAT college entrance exam are normally
distributed with a mean Math score of 480 and a standard deviation
of 100. If you select 50 students, what is the probability that
their mean Math score is more than 520. You MUST show what went
into the calculator along with your final answer rounded correctly
to 3 significant decimal places.
The scores of students on an exam are normally distributed with a mean of 250 and...
The scores of students on an exam are normally distributed with
a mean of 250 and a standard deviation of 40. (a) What is the first
quartile score for this exam? (Recall that the first quartile is
the value in a data set with 25% of the observations being lower.)
Answer: (b) What is the third quartile score for this exam?
Answer:
Suppose that your statistics professor tells you that the scores on a midterm exam were approximately...
Suppose that your statistics professor tells you that the scores
on a midterm exam were approximately normally distributed with a
mean of 78 and a standard deviation of 7. The top 15% of all scores
have been designated A’s. What is the minimum score that you must
earn in order to receive a letter grade A.
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 73...
Student scores on Professor Combs' Stats final exam are normally
distributed with a mean of 73 and a standard deviation of 6.5
Find the probability of the following:
**(use 4 decimal places)**
a.) The probability that one student chosen at random scores above
an 78.
b.) The probability that 20 students chosen at random have a mean
score above an 78.
c.) The probability that one student chosen at random scores
between a 68 and an 78.
d.) The probability...
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 73...
Student scores on Professor Combs' Stats final exam are normally
distributed with a mean of 73 and a standard deviation of 6.5
Find the probability of the following:
**(use 4 decimal places)**
a.) The probability that one student chosen at random scores above
an 78.
b.) The probability that 20 students chosen at random have a mean
score above an 78.
c.) The probability that one student chosen at random scores
between a 68 and an 78.
d.) The probability...
Scores on a recent national statistics exam were normally distributed with a mean of 82 and...
Scores on a recent national statistics exam were normally
distributed with a mean of 82 and a standard deviation of 4.
What is the probability that a randomly selected exam will have
a score of at least 87?
What percentage of exams will have scores between 80 and
85?
If the top 3% of test scores receive merit awards, what is the
lowest score eligible for an award?
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 4 minutes ago
asked 16 minutes ago
asked 21 minutes ago
asked 29 minutes ago
asked 33 minutes ago
asked 35 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago