The owner of a restaurant has recently hired a new manager who claims to have improved the workflow. the owner wants to know if indeed, the new workflow is more effective. he has some past data on customer waiting time during peak demand hours. he plans to collect the new data to test this. what kind of a test will he do if he wants to compare the new wait time with the old data in this way?

-if he takes the same number of observations, he can do a paired t-test

-this is a paired t-test because we are checking before and after

-this will be t-test unequal variances because now he has a new manager

-this is a test about sample proportions

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Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer

According to ceo heidi ganahl, camp bow wow requires a strong and consistent corporate culture to keep all local franchise owners "on the same page" and to follow a common template for the business and brand. this culture could become detrimental over time because: (a) strong consistent cultures are inflexible and incapable of adapting to environmental change (b) strong consistent cultures are too flexible and capable of adapting to environmental change (c) strong consistent cultures don’t perform well in any environment (d) the passing of time provides stability and predictability for businesses