Mathematics, 07.04.2020 18:06 bcox32314
A multiple choice test has four possible answers for each question. Let X be the number of correct responses in a test of 100 questions if the student simply guesses on each question. The standard deviation of X is
a. 4.33.
b. 18.75.
c. 0.433.
Answers: 2
Mathematics, 20.06.2019 18:04
To prove "p is equal to q" using an indirect proof, what would your starting assumption be?
Answers: 1
Mathematics, 21.06.2019 17:30
Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?
Answers: 3
Mathematics, 22.06.2019 00:00
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?
Answers: 3
A multiple choice test has four possible answers for each question. Let X be the number of correct r...
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