Hey can somebody help me with this question?

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

If u good at math hit me up on insta or sum @basic_jaiden or @ and