Mathematics, 31.01.2020 10:50 brsglover8355

Amarketing firm claims that its ad campaign will increase sales of a toy during the holidays by 25%. what would the null hypothesis be in this scenario?

a) there will be no change in sales as a result of the ad campaign.
b) sales will increase 25% as a result of the ad campaign.
c) sales will increase 15% as a result of the ad campaign.

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