Problem

Find the $z$-score for which $70 \%$ of the distribution's area lies to its right. $-1.52$ $-0.52$ $-0.84$ $-2.48$

Solution

Step 1 :The z-score is a measure of how many standard deviations an element is from the mean. In this case, we are asked to find the z-score for which 70% of the distribution's area lies to its right. This means that 30% of the distribution's area lies to its left.

Step 2 :We can use the percentile point function to find the z-score corresponding to the 30th percentile.

Step 3 :Let's denote the percentile as 0.3.

Step 4 :After calculation, we find that the z-score is approximately -0.5244005127080409.

Step 5 :Final Answer: The z-score for which 70% of the distribution's area lies to its right is approximately \(\boxed{-0.52}\).

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Source: https://solvelyapp.com/problems/I30h2NQz90/

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