A Recent Study Compared the Time Spent Together by Single

question 90

Multiple Choice

A recent study compared the time spent together by single and dual-earner couples. According to
The records kept during the study, the mean amount of time spent together watching TV among
Single-earner couples was 55 minutes per day, with a standard deviation of 15.5 minutes. For the
Dual-earner couples, the mean time was 48.4 and the standard deviation was 18.1. At a 0.01
Significance level, can we conclude that the single-earner couples on average spend more time
Watching TV together? There were 12 single-earner and 12 dual-earner couples studied. State the
Decision rule, the value of the test statistic, and your decision.

• A) Reject if t > 2.485, t = 2.57, insufficient evidence to say that single-earner couples spend more time watching TV together.
• B) Reject if t > 2.508, t = 0.96, insufficient evidence to say that single-earner couples spend more time watching TV together.
• C) Reject if t > 2.473, t = 2.57, single-earner couples spend more time watching TV together.
• D) Reject if t > 2.508, t = 0.96, single-earner couples spend more time watching TV together.
• E) Reject if t > 2.485, t = 2.01, single-earner couples spend more time watching TV together.

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Definitions:

Direct Material

Raw materials that are directly traceable to the manufacturing of a specific product and constitute a significant portion of the product's costs.

Manufacturing Overhead

Indirect production costs that are not directly tied to the production of goods, such as maintenance and utilities.

Departmental Overhead Rates

Rates used to allocate overhead costs to specific departments based on predetermined criteria, often used for cost accounting purposes.

Job Cost Sheet

A document that tracks the cost associated with a specific job, including materials, labor, and overhead.