TABLE 9-8 One of the Biggest Issues Facing E-Retailers Is the Ability

question 42

Multiple Choice

TABLE 9-8
One of the biggest issues facing e-retailers is the ability to turn browsers into buyers. This is measured by the conversion rate, the percentage of browsers who buy something in their visit to a site. The conversion rate for a company's website was 10.1%. The website at the company was redesigned in an attempt to increase its conversion rates. A samples of 200 browsers at the redesigned site was selected. Suppose that 24 browsers made a purchase. The company officials would like to know if there is evidence of an increase in conversion rate at the 5% level of significance.
-Referring to Table 9-8, the null hypothesis will be rejected if the test statistic is

• A) greater than 1.645.
• B) less than 1.645.
• C) greater than -1.645.
• D) less than -1.645.

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Definitions:

Unbiased Estimate

A conservative estimate of a population parameter.

Standard Deviation

A measure of the dispersion or variability of a set of data points, indicating how spread out the data are from their mean.

Subtract

The action or method of deducting one number or quantity from another.

Variance

A statistical measure of the dispersal or spread of a set of numbers, indicating how much the numbers vary from the average of the set.