Answer:
x=151
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Answer: If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes is .031
Step-by-step explanation:
3x+2y=50
x+y=19
x=12, y=7
12 jumps, 7 "raise the roof"s
This is One-half squared. That means you must multiply it by itself twice. This would result in 1/4 or one-fourth.