18. рорul. is administered to sample mean is found to be M = 49.2. Assuming that the sample standard deviation is 8, compute r and the estimated Cohen's d to a. measure the size of the treatment effect. b. Assuming that the sample standard deviation is 20, compute r2 and the estimated Cohen's d to measure the size of the treatment effect. Comparing your answers from parts a and b, how does the variability of the scores in the sample с. influence the measures of effect size? 21 19. A random sample is obtained from a population with a 45. After a treatment is administered to mean of u the individuals in the sample, the sample mean is M 49 with a standard deviation of s 12. a. Assuming that the sample consists of n = 9 scores, compute r2 and the estimated Cohen's d to measure the size of treatment effect. b. Assuming that the sample consists of n =16 scores, compute r2 and the estimated Cohen's d to measure the size of treatment effect. C. Comparing your answers from parts a and b, how does the number of scores in the sample influence the measures of effect size? 20. An example of the vertical-horizontal illusion is shown in the figure. Although the two lines are exactly the same length, the vertical line appears to be much longer. To examine the strength of this illusion, aro Onmnle in which both lines

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.