12 MAM MC Tech Active 1

• 1.6323 cm s^-1

• 0.4081 cm s^-1

• -0.9129 cm s^-1

• -3.6518 cm s^-1

A stall at the school fete sells cups of lemonade. Assuming the amount of lemonade in a cup is
normally distributed with a mean of 60 mL and a standard deviation of 3 mL, 80% of the cups contain more than:

• 52.4 mL

• 57.5 mL

• 61.6 mL

• 62.5 mL

The distribution for a sample proportion (p hat) has a mean of 0.15 and a standard deviation of
0.0345. The sample size is:

• 10

• 14

• 107

• 116

The continuous random variable X has the probability density
function given in the image. The standard deviation of X is:

• 0.467

• 0.684

• 1.211

• 1.467

Determine the length of side AB in triangle ABC

• 22.13

• 14.44

• 9.97

• 7.82

• 1.90

• 2.31

• 3.37

• 4.54

• 0.74

• 1.26

• 2.35

• 3.09