In your biology class, your final grade is based on several
things: a lab score, score...
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...
In your biology class, your final grade is based on several
things: a lab score, scores...
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...
For 200 students taking a common chemistry final, the mean score
was 85.2 and the standard...
For 200 students taking a common chemistry final, the mean score
was 85.2 and the standard deviation was 3.1. If these scores have a
normal distribution, what range would be expected to include about
68 percent of the scores?
An
education publication claims that the mean score for grade 10
students on a science achievement...
An
education publication claims that the mean score for grade 10
students on a science achievement test is more than 669. You
randomly select 38 grade 10 test scores. At a=0.1, can you support
the publications claim? Assume the the sample mean is 662.3, the
population standard deviation is 43.3, and the scores are normally
distributed.
Write a function, grade(score), which is given
score, and it returns a letter grade — the...
Write a function, grade(score), which is given
score, and it returns a letter grade — the grade for that mark —
according to this scheme:
A: >= 90
B: [80, 90)
C: [70, 80)
D: [60, 70)
F: < 60
The square and round brackets denote closed and open intervals.
A closed interval includes the number, and an open interval
excludes it. So 79.99999 gets grade C, but 80 gets grade B.
Define the main function as follows:
In main,...
You find out that the average 10th grade math score, for
Section 6 of the local...
You find out that the average 10th grade math score, for
Section 6 of the local high school, is 87 for the 25 students in
the class. The average test score for all 10th grade math students
across the state is 85 for 1,800 students. The standard deviation
for the state is 3.8.
Answer the following questions:
What z score do you calculate?
What is the area between the mean and the z score found in
Appendix A of the...
A random sample of 36 seventh grade students in Harvard are
given a test on a...
A random sample of 36 seventh grade students in Harvard are
given a test on a reading test. Below are their raw scores.
73, 77, 80, 80, 84, 86, 91, 93, 93, 93, 94, 97, 100, 100, 103,
103, 104, 105, 105, 106, 108, 110, 111, 117. 120, 120, 123, 124,
126, 128, 129, 129, 130, 130, 136
Sample mean = 105.97
Sample standard deviation = 17.18
Nationally 30% of the students score 110 points or higher on
this test....