1. Using the t-table, if the t-value is -1.708 and the shaded region is on the left of the t-distribution, what is the area of the unshaded region? *

A .0.95

B. 0.90

C. 0.10

D. 0.05

2. The population of Senior High School learners in Mapayapa Integrated School has a mean of 54.5 and a standard deviation of 8.6. If a sample of size 12 is taken at random from this population, which of the following statements is correct? *

A. The standard deviation of the sampling distribution of the sampling mean is 54.5.

B. The mean of the sampling distribution of the sample mean is less than 54.5

C. The mean of the sampling distribution of the sample mean is equal to 54.5.

D. The standard deviation of the sampling distribution of the sampling mean is 8.6

3. In the absence of the population variance and/or if the sample size is small, which sampling distribution is being used? *

A. z-distribution

B. p distribution

C. chi distribution

D. t-distribution

4. The following statements tell about the t-distribution EXCEPT _________________

A. As the degrees of freedom increase, the t-distribution tends to normal distribution.

B. The t-distribution has thicker tails than the normal distribution.

C. The standard deviation of the t-distribution is equal to 1.

D. The exact shape of a t-distribution depends on the degrees of freedom.

5. If the mean of the sampling distribution of the mean is 6.5, which of the following statements best describe the population mean? *

A. The population mean is also equal to 6.5.

B. The population decreases by 6.5.

C. The population mean and mean of the sampling distribution of the means cannot be compared.

D. The population is greater than 6.5.