Truth Yard Sale

Statistics Problem Need Help?

4.A large furniture store has begun a new ad campaign on local television. Before the campaign, the long-term average daily sales were $24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale average of x(bar) = $25,910. Does this indicate that the population mean daily sales are now more than $24,819? Use a 1% level of significance. Assume o(theta) = $1917.
please provide ways in which you got the answer

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