• Suppose a sample of n = 25 WMU students yielded
an average GPA of X = 3.05 and a standard
deviation of 0.40. Then the WMU true population
average GPA, 1, is estimated by 3.05 with a
standard error of What is the SE?
January 4, 2019
2020
Dirayer with Data Stat 1600
en Bun (WMU

Ineed if you could explain and give me the answer you! this needs done

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?