For numbers 11- 15, refer to the following problem. Suppose that the shelf life of Buko pies has a normal distribution with a mean of 36 hours and a standard deviation of 2.4 hours. Random samples of size 25 are taken. 11. What is the mean of the sampling distribution of the sample mean? A. 24 В. 30 С. 36 D. 42 12. What is the variance of the sampling distribution of the sample mean? A. 0.096 B. 0.2304 C.0.48 D. 1 13. What is the probability that the average shelf life of a random sample of size 25 is greater than 35 hours? А. 1 B. 0.9912 C. 0.9812 D. 0.9712 14. What is the probability that the shelf life of the random sample of size 25 is less than 36.5 hours? A. 0.8485 B. 0.8508 C. 0.8531 D. 0.8554 15. What is the probability that the shelf life of the random sample of size 25 is between 35 to 37 hours? A. 0.8941 B. 0.8961 C. 0.8972 D. 0.8983

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Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.