Adv Alg Common Assessment 1 S2 SY25

The heights of trees were measured in meters from a certain forest. The graph shows that the heights have a Normal distribution. About what percent of the trees are between 14 and 30 meters?

• 68%

• 81.5%

• 47.5%

• 95%

A bakery owner wanted to understand customer opinions about a new chocolate croissant. She surveyed customers who visited on a Wednesday. There were 150 customers that day. Why might this data not be suitable for making generalizations about all her customers?

• The survey size was insufficient.

• The bakery owner should have asked a different question.

• The sample was not randomly selected.

• A focus group rather than a survey should’ve been conducted.

On a highway, you take a random sample of the speed of 45 vehicles and determine that their average speed is 92 mph. Which statement is true?

• You conclude that the average speed of all the vehicles is close to 92 mph.

• You conclude that the speed of all vehicles on this highway is exactly 92 mph.

• You conclude that the average speed of all vehicles on this highway is close to 92 mph.

• You conclude that the speed of more than half of the vehicles on this highway is more than 92 mph.

The mean score in Mr. Johnson's history class is 75, with a standard deviation of 5. Emily scored an 80. What is her z-score?

• 1.0

• 0.5

• -1.0

• -0.5

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Which function represents exponential DECAY with a 7% rate of change?

• 5

• -5

• 81

• 4