Ineed this! 10 points! an investor invested a total of $2 comma 500 in two mutual funds. one fund earned a 4% profit while the other earned a 2% profit. if the investor's total profit was $82, how much was invested in each mutual fund? i need to find the amount invested in the mutual fund that earned 4% was $ _. the amount invested in the mutual fund that earned 2% was $ _.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Is a positive integer raised to a negative power always positive

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%