Gershwin. It premiered on January 12, 1924
Answer:
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Explanation:
They are perpendicular because their slopes are equal.
3.5% of the sample means fall above 1.06 cm.
<h3>Z score</h3>
z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

From the normal distribution table:
P(z > z*) = 3.5%
1 - P(z < z*) = 3.5%
P(z < z*) = 96.5%
z* = 1.81
Using the z score formula:

3.5% of the sample means fall above 1.06 cm.
Find out more on z score at: brainly.com/question/25638875