a) Null hypothesis: the mean time of telephone surveys is less than or equal to 15 minutes. Alternative hypothesis: the mean exceeds 15 minutes. b) The computed test statistic is 2.15. c) The p-value found is 0.0158. d) NO, there is significant evidence to support that the mean survey time is fewer than 15 minutes, thus the premium rate is not warranted. Explanation: Data from Microsoft Excel includes: 17, 11, 12, 23, 20, 23, 15, 16, 23, 22, 18, 23, 25, 14, 12, 12, 20, 18, 12, 19, 11, 20, 21, 11, 18, 14, 13, 13, 19, 16, 10, 22, 18, 23. a) The null and alternative hypotheses stem from the assumption that Fowle Marketing Research Inc. bases its charges on the premise that the mean time of a telephone survey is 15 minutes or less.
To address the problem outlined above, follow the procedure below: 1. Use the formula for determining the volume of a sphere, which is: V=4πr³/3, where V signifies the sphere's volume and r represents the radius (r=3.5 inches). 2. Substitute these numbers into the formula to arrive at the sphere's volume, resulting in V=4π(3.5 inches)³/3. 3. Therefore, the final answer is: V=179.5 inches³.
En la materia de estudios sociales, la tendencia es una disminución gradual. En cuanto a las demás asignaturas, los resultados varían a lo largo de los años.
Jerome's share of the total profit amounts to one-third. To determine the overall profit of the company, multiply his profit by 3.
If he earned $150,000, the calculation would be:
150,000 × 3 = $450,000
So, the total profit is $450,000.
The dot simply represents multiplication.
