The quarterly returns for a group of 76 mutual funds with a mean of 1.2% and a standard deviation of 4.6% can be modeled by a normal model. from these funds, find the cutoff return value(s) that would separate the
a) highest 40%.
b) lowest 20%.
c) middle 80%.
d) highest 80%.

explanation:

step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

inverse operation of addition