MOCK TEST - 2_MATHEMATICS AND STATISTICS

For the spoil bank trapezoidal cross-section shown, the area (ft²) is most nearly: 

• 150

• 250

• 350

• 450

For the parallelogram shown, diagonal distance d is most nearly:

• 10.24

• 23.98

• 32.25

• 35.12

The cross product of two parallel vectors is: 

• 0

• 1

• 2

• 3

How many different three-digit permutations are available, selected from ten digits from 0 to 9 combined? (including 0 and 9).

• 120

• 42

• 720

• 800

In a game of poker, a player is given 5 random cards from a standard 52 card deck. How many different combinations are possible?

• 0

• 311,875,200

• 2,598,960

• 45

The standard deviation of lab test data #1 and lab test data #2 are 11.5 and 13.0, respectively. Which of the following is true?

• Lab test #2 is more reliable because the standard deviation is higher.

• Both the lab tests share the same amount of reliability.

• Lab test #2 is less reliable because the standard deviation is higher.

• Lab test #1 is less reliable because the standard deviation is lower.

Three different concrete mixtures are tested for the 28-day compressive strength of concrete. The results are shown in the table below. For mixture #2, calculate the correct value for Mean:

• 29.125

• 30.222

• 45.224

• 76.134

Three different concrete mixtures are tested for the 28-day compressive strength of concrete. The results are shown in the table below. For mixture #2, calculate the correct value for Sample Standard Deviation:

• 1.345

• 2.943

• 6.356

• 2.134

The value in a distribution that occurs most frequently:

• Median

• Mode

• Variance

• Standard Deviation

The central value of an ordered distribution:

• Mean

• Range

• Median

• Mode