Question

In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 30% of your total grade, each major test is worth 22.5%, and the final exam is worth 25%. Compute the weighted average for the following scores: 92 on the lab, 85 on the first major test, 90 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.

Group of answer choices

86.85

87.58

89.98

85.58

87.98

Answer #1

TOPIC:Weighted average.

In your biology class, your final grade is based on several
things: a lab score, scores on two major tests, and your score on
the test. There are 100 points available for each score. However,
the lab score is worth 20% of your total grade, each major test is
worth 22.5%, and the test is worth 35%. Compute the weighted
average for the following scores: 96 on the lab, 78 on the first
major test, 66 on the second major...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 4%, each
paper is worth 9%, each test is worth 14%, and the final is worth
36%.
(a) What is the average for a student with 84 on attendance, 79
on the first paper, 69 on the second paper, 83 on test...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 5%, each
paper is worth 9%, each test is worth 17%, and the final is worth
26%.
(a) What is the average for a student with 65 on attendance, 81
on the first paper, 76 on the second paper, 97 on test...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 3%, each
paper is worth 6%, each test is worth 18%, and the final is worth
31%.
(a) What is the average for a student with 75 on attendance, 64
on the first paper, 82 on the second paper, 90 on test...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 6%, each
paper is worth 10%, each test is worth 16%, and the final is worth
26%.
(a) What is the average for a student with 77 on attendance, 86
on the first paper, 68 on the second paper, 63 on test...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 6%, each
paper is worth 10%, each test is worth 15%, and the final is worth
29%.
(a) What is the average for a student with 100 on attendance, 96
on the first paper, 68 on the second paper, 83 on test...

Professor Cramer determines a final grade based on attendance,
two papers, three major tests, and a final exam. Each of these
activities has a total of 100 possible points. However, the
activities carry different weights. Attendance is worth 6%, each
paper is worth 5%, each test is worth 14%, and the final is worth
42%.
(a) What is the average for a student with 67 on attendance, 93
on the first paper, 83 on the second paper, 91 on test...

An instructor of a biology class believes the average final exam
score for his biology class was more than 75.
Suppose a sample of 25 was taken and the sample mean he observed
was 78.48 and a standard deviation of 5 points. What is the value
of the test statistic? Report your answer to 2 decimal places.
(hint: to determine which test statistic to calculate, you must
think about what methods should be used. Either one-sample
t-methods, one-sample z-methods or...

In your psychology class, the mean exam score is 72 and
the standard deviation is 12. You scored 78.
In your biology class, the mean exam score is 56 and the
standard deviation is 5. You scored 66.
If your professors grade "on a curve" (i.e., according
to the distribution of scores), for which exam would you expect to
get a better grade?
(Hint: Convert your exam scores to
z-scores).
A) Biology
B) Psychology

Question 1
1. A set of final examination grades in an introductory
statistics course is normally distributed with a mean of 85 and a
standard deviation of 12.
a) What is the probability of getting a grade of 95 on this
exam?
b) What is the probability that a student scored less than 55
and more than79?
c) The probability is 8% that a student taking the test scores
higher than than what grade?
d) If the professor grades on...

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