Which of the Following Is the Best Prediction of the Chemical

question 13

Multiple Choice

Which of the following is the best prediction of the chemical shifts for the signals in the ¹H NMR spectrum for the following compound?

• A) I=3.7 ppm, II=2.7 ppm, III=1.9 ppm
• B) I=3.7 ppm, II=2.2 ppm, III=1.9 ppm
• C) I=3.9 ppm, II=2.7 ppm, III=1.9 ppm
• D) I=3.9 ppm, II=2.2 ppm, III=2.4 ppm
• E) none of these

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Definitions:

Variability

The measure of how much data points in a set diverge from the average or mean value, indicating the spread or dispersion of the dataset.

Standard Deviation

A measure that is used to quantify the amount of variation or dispersion of a set of data values.

Standard Error

The typical variability or spread in the sampling distribution of a statistic, most commonly the mean, is referred to as the standard deviation.

T-statistic

The t-statistic is a ratio calculated from the difference between a sample mean and a population mean, divided by the standard error of the mean.