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Q103SE

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Found in: Page 506

### Statistics For Business And Economics

Book edition 13th
Author(s) James T. McClave, P. George Benson, Terry Sincich
Pages 888 pages
ISBN 9780134506593

The null and alternative hypothesis are

\begin{aligned}{l}{H_0}:{\mu _1} - {\mu _2} &= 0\\{H_a}:{\mu _1} - {\mu _2} \ne 0\end{aligned}

See the step by step solution

## Step1: Given Information

The sample sizes are 20 and 20.

The means are 3.70 and 3.30.

The standard deviations are 1.98 and 2.13.

## Step 2: Specifying the null hypothesis

The null hypothesis are given by

$${H_0}:{\mu _1} - {\mu _2} = 0$$

i.e. children who receive an audiovisual presentation will have the same level of mean recall of ad information as those who receive only the visual aspects of the ad.

## Step 2: Specifying the alternative hypothesis

The alternative hypothesis are given by

$${H_a}:{\mu _1} - {\mu _2} \ne 0$$

i.e. children who receive an audiovisual presentation will have the same level of mean recall of ad information as those who receive only the visual aspects of the ad.

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