A Recent Study Compared the Time Spent Together by Single

question 55

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 65 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 15 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 = 2.01, single-earner couples spend more time watching TV together.
• B) Reject if t > 2.473, t = 1.95, 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 > 2.485, t = 2.57, insufficient evidence to say that single-earner couples spend more time watching TV together.
• E) Reject if t > 2.485, t = 2.57, single-earner couples spend more time watching TV together.

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Definitions:

Cash Flows

Cash Flows refer to the inflows and outflows of cash and cash equivalents, indicating a company's ability to generate funds to support its operations and finance its investments.

Direct Method

A way of reporting cash flows from operating activities by listing major categories of gross cash receipts and payments.

Biological Control

The use of living organisms to control pests, diseases, or invasive species in a natural and environmentally friendly manner.

Genetic Resistance

The inherent capability of an organism to withstand environmental pressures, diseases, or pests through its genetic makeup.