Question

E-commerce websites "alter results depending on whether consumers use smartphones or particular web browsers"1, reports a new study. The researchers created clean accounts without cookies or browser history and then searched for specific items at different websites using different devices and browsers. On one travel site, for example, prices given for hotels were cheaper when using Safari on an iPhone than when using Chrome on an Android. At Home Depot, the average price of 20 items when searching from a smartphone was , while the average price when searching from a desktop was .

Answer 1

From the given information, some values are missing and we've provided them in a bold format below.

At Home Depot,

• the average price for 20 items when searching from a smartphone was $230, while;
• the average price when searching from a desktop was $120.

The objective of this question is to determine the difference in their means.

From above:

• Let the average price while searching on a smartphone be: $\mathbf{\bar x_1 = 230}$

• Let the average price while searching on desktop be: $\mathbf{\bar x_2 = 120}$

Therefore, the difference in their mean value is:

$\mathbf{= \bar x_2 - \bar x_1}$

$\mathbf{= \ 230 -\ 120}$

= $110

We can therefore conclude that the difference in their mean is $110

Learn more about mean values here:

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