Asked Sep 23, 2019

A sample of 10 people ingested a new formulation of a new drug. Six hours later, the concentrations in their bloodstreams, in nanograms per mililiter were as follows: 2.3 1.4 1.8 2.1 1.0 4.1 1.8 2.9 2.5 and 2.7.

Construct a dot plot for this sample. Is it reasonable to treat the sample as coming from an approximately normal population? Explain.


Expert Answer

Step 1

Dot plot:

It is a variation in bar chart in which dots are used instead of bars to represent the frequencies. Each dot represents a value.

Here, the concentration in blood streams is counted for a random sample of 10 people. The x-axis represents the concentrations. The Dot plot is given below:


Image Transcriptionclose

Dotplot of values 4.0 1.0 1.5 2.0 2.5 3.0 3.5 values

Step 2

A careful inspection of dot plot reveals that the distribution of values is approximately normal. Therefore,...

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