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Activity 1: Fact or Bluff!
Directions: Read each item carefully. Write FACT if the statement is correct
otherwise write BLUFF.
1. A standard normal random variable is a normally distributed random variable
with mean equal to 0 and standard deviation equal to 1.
2. The normal random variable is denoted by letter 2
3. The probability value corresponds to the area of the normal curve.
4. A percentile is a measure of relative standing.
5. The formula to be used in converting standard normal variable to normal
random variable is z =
X-H
0
6. A probability is a descriptive measure of the relationship of a measurement to
the rest of the data.
7. The z-scores to the left of the mean are negative values.
8. In locating area at the body of the table, if the exact area is not available, we take
the nearest area.
9. Standard normal table is also known as table of areas under the normal curve or
z-table.
10. In converting normal random variable to standard normal variable the formula
to be used is x = H - Oz​