Foreign-born residents The percentile plot below shows the distribution of the percent of foreign-born residents in the 50 states.

(a) The highlighted point is for Maryland. Describe what the graph tells you about this state.

(b) Use the graph to estimate the 30th percentile of the distribution. Explain your method.

Short Answer

Expert verified

Part(a) It is observed that Maryland has about 13%, foreign-born residents.

Part(b) The 30% percentile is approximately 4.5% foreign-born residents in the 50 states.

Step by step solution

01

Part (a) Step 1. Given

02

Part (a) Step 2. Concept

A score in the 95th percentile is a figure on a scale of 100 that represents the percent of a distribution that is equal to or below it.

03

Part (a) Step 3. Explanation

70Its purpose is to describe the highlighted point in the percentile graph provided.

Procedure

Step 1: Draw a horizontal line from the vertical axis' highlighted point.

Step 2: From this point, draw a vertical line to the horizontal axis.

Step 3: The line intersects the vertical axis at about70 degrees and the horizontal axis at about 13 degrees.

The aforesaid technique is depicted in the graph below.

According to the graph above, Maryland has a foreign-born population of around 13%

Therefore, Maryland has about 13% foreign-born residents.

04

Part (b) Step 1. Explanation

It's supposed to calculate the distribution's 30th percentile.

Procedure

Step1: Determine the place on the ogive where the line intersects the ogive by drawing a horizontal line from the value 30 on the vertical axis.

Step 2: From this point, draw a vertical line to the horizontal axis.

Step 3: At about 4.5, the line intersects the axis.

The technique is depicted in the graph below:

Therefore, the 30thpercentile is approximately 4.5%of foreign-born residents in the 50 states.

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