A new small business wants to know if its current radio advertising is effective. The owners decide to look at the mean number of customers who make a purchase in the store on days immediately following days when the radio ads are played as compared to the mean for those days following days when no radio advertisements are played. They found that for 13 days following no advertisements, the mean was 23.8 purchasing customers with a standard deviation of 1.4 customers. On 8 days following advertising, the mean was 24.4 purchasing customers with a standard deviation of 2.2 customers. Test the claim, at the 0.10 level, that the mean number of customers who make a purchase in the store is lower for days following no advertising compared to days following advertising. Assume that both populations are approximately normal and that the population variances are equal. Let days following no advertisements be Population 1 and let days following advertising be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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A new small business wants to know if its current radio advertising is effective. The owners decide to look at the mean number of customers who make a purchase in the
store on days immediately following days when the radio ads are played as compared to the mean for those days following days when no radio advertisements are
played. They found that for 13 days following no advertisements, the mean was 23.8 purchasing customers with a standard deviation of 1.4 customers. On 8 days
following advertising, the mean was 24.4 purchasing customers with a standard deviation of 2.2 customers. Test the claim, at the 0.10 level, that the mean number of
customers who make a purchase in the store is lower for days following no advertising compared to days following advertising. Assume that both populations are
approximately normal and that the population variances are equal. Let days following no advertisements be Population 1 and let days following advertising be
Population 2.
Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.
DE AND
augustion lan
U
Z
D
DEJME MUSULMA
2255-2005
²
TEACHE
102-000-000-
---
D
Transcribed Image Text:A new small business wants to know if its current radio advertising is effective. The owners decide to look at the mean number of customers who make a purchase in the store on days immediately following days when the radio ads are played as compared to the mean for those days following days when no radio advertisements are played. They found that for 13 days following no advertisements, the mean was 23.8 purchasing customers with a standard deviation of 1.4 customers. On 8 days following advertising, the mean was 24.4 purchasing customers with a standard deviation of 2.2 customers. Test the claim, at the 0.10 level, that the mean number of customers who make a purchase in the store is lower for days following no advertising compared to days following advertising. Assume that both populations are approximately normal and that the population variances are equal. Let days following no advertisements be Population 1 and let days following advertising be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. DE AND augustion lan U Z D DEJME MUSULMA 2255-2005 ² TEACHE 102-000-000- --- D
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