Question

A company has set a goal of developing a battery that lasts over 5 hours (300 minutes) in continuous use. The first test of 12 Of these batteries measured the following lifespans (in minutes): 321, 295, 332, 351, 281, 336, 311, 253, 270, 326, 311, and 288.

1.Enter the data in to Minitab.

2. Create the 90% confidence interval for the mean life span of this type of battery in Minitab. Copy and paste your Minitab output below.

3.Provide the following information: Critical t-value ( for the 90% CI: Degrees of freedom of the T-model: Sample mean of lifespan: Sample standard deviation of lifespan

4. Interpret your 90% confidence interval. 5. Do you think the company has met their goal? Explain. (just yes or no answers without a reasonable explanation will receive 0 points)

Answer 1