A Researcher Is Testing a Null Hypothesis Stating That for the General

question 34

Multiple Choice

A researcher is testing a null hypothesis stating that for the general population there is no preference between the two leading brands of cola.In a sample of n = 100 people,35 preferred brand A and 65 preferred brand B.Assuming that the researcher uses a two-tailed test,what is the appropriate statistical decision?​

• A)​Reject the null hypothesis with α = .05 but not with α = .01.
• B)​Reject the null hypothesis with either α = .05 or α = .01.
• C)​Fail to reject the null hypothesis with either α = .05 or α = .01.
• D)​No decision is possible without additional information.

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Definitions:

Population Parameter

A numerical value that represents a characteristic of an entire population, such as its mean or standard deviation.

Interval Estimate

An estimate that provides a range of values which is likely to include the population parameter of interest.

Confidence Level

The confidence associated with an interval estimate. For example, if an interval estimation procedure provides intervals such that 95% of the intervals formed using the procedure will include the population parameter, the interval estimate is said to be constructed at the 95% confidence level.

Confidence Interval

A breadth of outcomes, sourced from sample-derived statistics, expected to surround the unknown figure of a population characteristic.