The Following is the result of the examination of 55 students in
statistics
Classes
FREQUENCY
33-40
4
41-48
8
49-56
10
57-64
11
65-72
9
73-80
6
81-88
2
89-96
5
Compute the Following:
SEVENTH DECILE
THIRD QUARTILE
Construct a frequency distribution table with five classes on
the approved credits of 40 students (sample) of the Nursing
Program:
32 34 56 43 31 24 19 24
58 45 68 51 46 30 29 37
63 59 73 21 53 42 32 16
19 66 75 17 48 21 23 19
24 88 70 19 53 12 24 27
Make a frequency distribution table that has the limits,
borders, class marks or midpoints, frequencies or absolute
frequencies, accumulated frequencies,...
The following data are scores on a standardized statistics
examination for independent random samples of students from two
small liberal arts colleges.
College A: 78, 84, 81, 78, 76, 83, 79, 75, 85, 81
College B: 89, 78, 83, 85, 87, 78, 85, 94, 88, 87
Calculate the sample variance (or standard deviation) for each
college.
For the test of homogeneity,
Ho: σ²A = σ²B
Ha: σ²A ≠ σ²B
calculate the test statistic F'.
For α = 0.05, specify the...
4-2.5 In a class of 50 students, the result of a particular
examination is a true mean of 70 and a true variance of 12. It is
desired to estimate the mean by sampling, without replacement, a
subset of the scores.
a) Find the standard deviation of the sample mean if only 10
scores are used.
b) How large should the sample size be for the standard
deviation of the sample mean to be one percentage point (out of
100)?...
A class of 40 students, 18 are males and 22 are females.
For the final examination, 3 males and 5 females achieved a letter
grade of A. What is the probability that a randomly selected
student from the class achieved letter A grade or is a female
student?
Select one:
a. 27/40
b. 25/40
c. 13/30
d. 30/40
e. 22/40
Suppose it is known that 11% of Canadian are left
handed. In a random sample of 500 Canadian, what is...
. Build a frequency distribution table with five classes on the approved credits of ?? students (sample) of the Nursing Program: (40 points)
32 34 56 43 31 24 19 24 58 45 68 51 46 30 29 37 63 59 73 21 53 42 32 16 19 66 75 17 48 21 23 19 24 88 70 19 53 12 24 27
NOTE 1: Make a frequency distribution table that has limits, boundaries, class marks or midpoints, absolute frequencies...
Build a frequency distribution table with five classes on the
approved credits of ?? students (sample) of the Nursing Program:
(40 points) 32 34 56 43 31 24 19 24 58 45 68 51 46 30 29 37 63 59
73 21 53 42 32 16 19 66 75 17 48 21 23 19 24 88 70 19 53 12 24 27
Draw a frequency polygon to represent the previous data.NOTE 1:
Remember that you must use on the x...
a) Make a frequency distribution table.Make a frequency
distribution table with 6 classes on the following test scores of
25 students in my class. Include the following columns in the
table: Classes, Frequency, Class Mark, Class Boundaries, Relative
Frequency and Relative % (make sure you find the class width) 45,
67, 87, 96, 76, 56, 45, 56, 67, 77, 88, 92, 34, 37, 46, 86, 90, 96,
49, 50, 60, 70, 85, 70, 99
b) Use the test scores in...
The test scores of 40 students are summarized in the
frequency table below. What is the standard deviation, mean, and
median?
Score students
50-59 14
60-69 6
70-79 5
80-89 9
90-99 6
A frequency distribution for the ages of randomly selected 27
students taking a statistics course in a college is given below. a.
Make a relative frequency histogram for the data. Label axes and
units. b. What is the shape of the distribution? c. Compute the
sample mean d. Use information from (c) to fill in the blanks in
the following statement: In the sample of 27 students taking
statistics, the average age of a student is about _______.
Age Frequency...