A Sample Has a Mean of M = 39

question 60

Multiple Choice

A sample has a mean of M = 39.5 and a standard deviation of s = 4.3,and produces a t statistic of t = 2.14.For a two-tailed hypothesis test with α = .05,what is the correct statistical decision for this sample?​

• A)​The researcher can reject the null hypothesis with α = .05 but not with α = .01.
• B)​The researcher can reject the null hypothesis with either α = .05 or α = .01.
• C)​The researcher must fail to reject the null hypothesis with either α = .05 or α = .01.
• D)​It is impossible to make a decision about H₀ without more information.

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Definitions:

Joint Cost

Costs incurred in the process of producing two or more products simultaneously from the same input or process.

Split-Off Point

The split-off point is the stage in a manufacturing process where joint products can be recognized as separate products, each with its own identity.

Joint Products

Joint products refer to two or more products that are generated from a common set of inputs or production processes, where no single product can be identified as the main product until a certain point in the production process.

Fixed Cost

A cost that remains constant, in total, regardless of changes in the level of activity within the relevant range. If a fixed cost is expressed on a per unit basis, it varies inversely with the level of activity.