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A sample of 16 students showed that the variance in the number of hours they spend studying is 25. At 95% confidence, test to see if the variance of the population is significantly different from 30. Use the critical value approach.
Fraction
A numerical expression of the number of portions of a whole by using the number of portion over the designated whole number, as in 1/8 or “one-eighth.”
Liter
A unit of measure; 1,000 mL or approximately 1 quart.
Tablespoon
A unit of volume commonly used in cooking to measure ingredients, equivalent to three teaspoons.
Drop
In a medical context, a small liquid measurement that is often used in medication dosages or to describe the volume of a substance.
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Q144: Refer to Exhibit 9-2. The p-value is