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Question 23 (3 points) Following an advertising campaign, we want to check whether the percentage of people who claim to know the soap Axcedull (by
Question 23 (3 points) Following an advertising campaign, we want to check whether the percentage of people who claim to know the soap Axcedull (by 40%) has increased. Out of 1000 interviewees, a total of 430 people said they knew the soap Axedull. Can we say with a 99% confidence level that the percentage of people who know the Axcedull soap has increased significantly? The number of people who know Axcedull soap did not increase significantly at the 1% level of significance since the calculated p success proportion is greater than the upper critical P value of 0.4199. The number of people who know Axcedull soap has not increased significantly at the 1% significance level since the proportion of calculated success p is less than the upper critical p value of 0.4399. The number of people who know about Axcedull soap has increased significantly at the 1% significance level since the calculated proportion of successes p is greater than the upper critical p value of 0.4199. The number of people who know Axcedull soap did not increase significantly at the 1% level of significance since the calculated proportion of successes p is greater than the upper critical P value of 0.4255. The number of people who know Axcedull soap has increased significantly at the 1% level of significance since the calculated success rate p is less than the upper critical P value of 0.4399. The number of people familiar with Axcedull soap did not increase significantly at the 1% level of significance since the calculated p success proportion is below the upper critical p value of 0.4360. 10: The number of people who know Axceduli soap has increased significantly at the 1% level of significance since the calculated success proportion p is below the upper critical P value of 0.4360. 11: The number of people who know Axcedull soap has increased significantly at the 1% level of significance since the calculated proportion of successes p is greater than the upper critical P value of 0.4255. 12
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