This is done in for parts (separated by letter)

f=H-66.4/2.26

H represents a person's height and f is the length of the person's femur bone. The equation has a margin of error of 3.42 cm.

A. Calculate the height if some of the remains. You have found several femur bones. In order to determine the heights we need to first solve the given formula H.

B. The femur bones measure 40.6 cm, 39 cm, and 48.2 cm. find the height of each person.

c. find the height of eacg person in feet.

d. using the margin of error, create an absolute value inequality to represent the range of the height for each individual.

I need help understanding both the formula for H and margin of error, please

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

Which number can each term of the equation be multiplied by to eliminate the decimals before solving? 5.6j- 0.12=4+1.1j

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant