12. A certified public acountant (CPA) claims that more than \( 30 \% \) of all acountants advertise. What kind or parameter is used in this damim A. mean
B. Variance
C. propurtion
D. Standard deviation
13. The average baptismal cost indudes 50 guets. A random sample of 32 baptismal during the part year in the national capital Recion hos a mean of 53 quests and a standard deviation of 10 . Which a parameter?
A. the mean of 53 guests
B. the standard deviation of 10
C. a raniom sample of 32 baptismal
P. the avenge baptismal cost induding
14. Powder milk is packed in I-kilouram bag. An inspector from department of trade and indusimy CDTI) suspects that bags may not contain 1 kilogram. A sample of 40 bags produces a mean of 0.96 kilogram and standard deviation 0.12 kilogram. In this problem, 0.96 kilogram is.
A. Variance B. Sample mean C.Population D.útandard deviation.
15. In symbols, what is the parameter in the given claim below? In 2018, Deped reported that the proportion of Grade 10 completers who proceeded to Grade 11 is \( 93 \% \) A. \( p=0.93 \)
B. \( \sigma=0.93 \)
C. \( \mu=0.93 \)
\( 0 . \bar{x}=0.93 \)