Use the Following to Answer the Question(s) Below

question 62

Multiple Choice

Use the following to answer the question(s) below.
A manufacturer of cordless electric shavers sampled 13 from a day's production and found the mean time of continuous usage without recharging to be 410 minutes with a sample standard deviation of 30 minutes. We can assume that times are normally distributed. We wish to test if the true mean operating time without recharging is more than 400 minutes.
-The correct conclusion at the 0.05 level of significance is

• A) Reject the null hypothesis.
• B) Fail to reject the null hypothesis, and there is no evidence that true mean operating time without recharging is more than 400 minutes.
• C) Evidence suggests that the mean operating time is more than 400 minutes.
• D) Reject the null hypothesis and find that evidence suggests that the mean operating time is more than 400 minutes.
• E) Do not reject the null hypothesis and find that evidence suggests that the mean operating time is more than 400 minutes.

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Definitions:

Chain of Command

The formal line of authority within an organization, showing how orders flow from top management down to lower levels of employees.

Competitive Advantage

A distinct characteristic or group of characteristics giving an organization the advantage over its competition.

Streamline

Simplifying procedures or methods to increase efficiency and reduce complexity or waste.

Divisional Structure

An organizational framework where operations are grouped based on distinct products, services, markets, or geographic locations.