Math Answers

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

X 3,5,7

p(3) =7/30 , p(5) = 1/3, and p(7) = 13/30

Construct all random samples consisting three observations from the given data. Arrange the observations in ascending order without replacement and repetition 86 89 95 98

{x/x is an integer such as x² =2}