If the Null Hypothesis Is True and We Set the Alpha

question 47

Multiple Choice

If the null hypothesis is true and we set the alpha level at .05, then we will make type I errors:

• A)5 times out of 100.
• B)1 time out of 100.
• C)5 times out of 10.
• D)it can't be determined from this information.

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Definitions:

Median

The middle value of a dataset, which divides the dataset into two halves when the numbers are arranged in ascending order.

1st Quartile

The 1st quartile, also known as the lower quartile, is a statistical measure that divides the lowest 25% of data in a dataset from the highest 75%.

3rd Quartile

The value below which 75% of the data in a dataset falls, marking the upper quartile in a distribution of values.

Negatively Skewed Distribution

A distribution where the tail on the left side of the probability density function is longer or fatter than the right side.