5 minutes
100 sit-ups in 2 minutes means 50 sit-ups per minute
amount of sit-ups / mins
100 / 2
200. /. 4
300. /. 6
Answer:
E(X) = 0.64
Sd(X) = 0.933
Step-by-step explanation:
3(0.07) + 2(0.11) + 1(0.21)
E(X²) = 3²(0.07) + 2²(0.11) + 1²(0.21)
= 1.28
Var(X) = 1.28 - 0.64² = 0.8704
Sd = 0.933
Step-by-step explanation:
9.02
remember when dealing with decimals:
0.(tenth)(hundredths)(thousandths)
Answer:
204 R45
Step-by-step explanation:
