Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score. P_80 Click to view page 1 of the table, Click to view page 2 of the table. The z-score that corresponds to P_80 is. (Round to two decimal places as needed.)

Krish Logan

Krish Logan

Answered question

2022-10-23

Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score.
P 80
The z-score that corresponds to P 80 is ...
(Round to two decimal places as needed.)

Answer & Explanation

pararevisarii

pararevisarii

Beginner2022-10-24Added 9 answers

Note- Since both the questions are different so as per our policy we can answer only 1st question. If you want a solution to another question then you have to make a separate request.
We have given that 76% of the area lies between -z to z.
We have to find the z-scores.
P ( z < Z < z ) = 0.76 P ( Z < z ) P ( Z < z ) = 0.76 P ( Z < z ) [ 1 P ( Z < z ) ] = 0.76 2 P ( Z < z ) = 1.76 P ( Z < z ) = 0.88
From the Z table, the z-score for the probability of 0.88 is 1.175.
The z-scores are -1.175, 1.175.

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