Search & Filtering
Find the mean of the probability distribution of a random variable X, if P(X) = 20
X 1
for X =
1,2,3,4, and 5.
if u=(2,-3,4) & v=(-1,2,0)& w=(5,-1,2) find the angle b/n (u-2v) & (u+2w)
Perform what is being asked. Follow the steps indicated in the first column of the table to complete
the activity. In the second column, write your solution on the spaces provided. Situation: A population
of PWD learners in 5 schools in a certain municipality of Quezon Province are (x) 3, 7, 6, 13, and
17. Suppose that two schools were selected as samples, determine the mean and variance of the
sampling distribution of sample mean.
First Step:
Second Step:
a.
Third Step:
Fourth Step:
Fifth Step:
Sixth Step:
Seventh Step:
2. Coren was able to sell several pairs of Marikina shoes that have sizes of 9, 7, 11, 3, and
8. Consider samples of size 3 that can be drawn from this population
a. List down all the possible samples and corresponding sample mean
Sample
Sample Means
b. Construct the sampling distribution of the sample means.
Sample Means
Frequency
Probability P(x)
c. Draw a histogram of the sampling distribution of the sample mean.
A population consists of the values (6, 9, 5, 3). Consider samples of size 2 that can be
drawn from this population.
a. List down all the possible samples and corresponding sample mean
Sample
Sample Means
b. Construct the sampling distribution of the sample means.
1. A teacher’s record has the following (a) Scores of student in a 50-item test (b) Gender (c)Height of the students Let: X = Scores of students in a 50-item test Y = Gender Z = Height of the students Classify each variable above as discrete or continuous
Samples of three cards are drawn at random from a population of 7 seven cards numbered 1 – 7.
47 – 48. How many possible samples can be drawn?
49 – 58 . Construct the sampling distribution of the sample means.
A simple random sample of size 5 is drawn without replacement from a finite
population consisting of 41 units. If the population standard deviation is 6.25, what is the
standard error of sample mean?
The following data give the no of passengers travelling by Boeing 747 from one city to another in one week.
320, 290, 265, 300, 270, 315
Calculate the mean and standard deviation
Determine each of the following areas and show these graphically.
1. to the right of z = 1.1
2. between z = -2 and z = -1.5
