23. A a. Sample is a measure thath describe a population. b. Population 24. The numbers of workers in six outlets of a fast food restaurant are 12, 10, 11, 15, 12, and C . Parameter d. Statistics Senior High School The following are the scores of 8 randomly selected students in grade 10 at PHILTECH 25. Find the sample sample mean. a. 9.58 b. 10.74 c. 10.75 d. 9.59 26. Find the sample variance. a. 6.89 b. 7.93 C. 8.37 d. 5.31 27. To find the sample standard deviation use the formula; a. $2 = [ ( x -2 ) 2 b . 02 = [ ( x -14) I( x-8) 2 02 = E( x - 1) 2 n -1 n - 1 n-1 28. It is the probability distribution that describe the probability for each mean of all the samples with the same sample size n. a. Sampling Distribution b. Random Sampling c. Probability Histogram d. Uniform _29. Compute for the mean of the sample of 6, 15, 27, 22, 16, 19, 24. a. 18.42 b. 18.43 C. 18.44 d. 18.45 30. How many possible combination does the population 1,2,3 & 4 with a sample size 2 without replacement? a. 2 b. 4 C. 6 d. 8 TEST II: Direction: Consider a population consisting of the values (1,3,4). 1. Compute the population mean. 2. Compute the population variance. 3. List all the possible samples of size 2 that can be drawn from the population with replacement. 4. Compute for the mean of the sampling distribution of the means. 5. Compute for the standard deviation of the sampling distribution of means. 6. Construct the probability histogram of x without replacement when n=2. TEST III: Directions: Use the t-table to identify the area under the t-distribution given the t-value and the number of degrees of freedom. 1. Area to the right of 2.821 under a t-distribution with 9 degrees of freedom 2. Area to the left of -2. 179 under a t-distribution with 12 degrees of freedom 3. Area to the left of 0.889 under a t-distribution with 8 degrees of freedom