A restaurant that bills its house accounts monthly isconcerned about the average monthly bill exceeds $200 per account.A random sample of twelve accounts is selected, resulting in asample mean of $220 and a standard deviation of $12. The t-test isto be conducted at the 5% level of significance. What is the calculated vaue and the critical value of t?

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A restaurant that bills its house accounts monthly isconcerned about the average monthly bill exceeds $200 per account.A random sample of twelve accounts is selected, resulting in asample mean of $220 and a standard deviation of $12. The t-test isto be conducted at the 5% level of significance.  What is the calculated vaue and the critical value of t?

Jayden-James Duffy · Accepted Answer

A restaurant that bills its house accounts once a month worries that the average monthly bill for each account exceeds $200. Twelve accounts are chosen at random for the sample, with a sample mean of $220 and a standard deviation of $12. The t-test is to be conducted at the 5% level of significance.&amp;nbsp;a = $200 ; b = $12 ; n =12 ; sample mean(sm) = $220&amp;nbsp;Null hypothesis : the monthly avg. is 200&amp;nbsp;Alternative hypothesis : monthly avg is more than 200&amp;nbsp;t=nsm−ab&amp;nbsp;=12⋅(20)12&amp;nbsp;=5.77&amp;nbsp;Calculated value is 5.77&amp;nbsp;Critical value at 5 % level is 1.796

A restaurant that bills its house accounts monthly isconcerned about the average monthly bill exceeds $200 per account.A random sample of twelve accou

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