Could anyone help with these questions A indicates the dista

A indicates the distance and direction of an direction of an individual score from the mean of a direction At the most recent acceleration survival track meet, Count Chocula obtained the following z-scores: What was Count Chocula\'s percentile rank for the dead-end dive? Express your answer to the nearest whole number. At the most recent acceleration survival track meet, Yosamite Sam obtained the following z-scores: What was Yosamite Sam\'s percentile ran- for the whiplash knot? Express your answer to the nearest whole number. A standard normal distribution has a mean of 25 and a standard deviation of 5. What is the probability of obtaining a score of as high as 33?

Solution

7.

The z score does this. [OPTION A]

As you can see,

z = (x - u)/sigma

in which the numerator is the distance from the mean, and the sign is the direction.

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8.

Using table/technology, the left tailed area for z = -1.27 is

P = 0.102042315

Thus, his percentile rank is 10%. [ANSWER]

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