An investor invested a total of $1500 in two mutual funds. One fund earned a 6% profit while the other earned a 4% profit. If the investor's total profit was $72, how much was invested in each mutual fund?

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?