75 Ounces Difference????????
100-25=75
I think this is what you asked?<span />
780,120?
Attention:check before using this answer it may not be right.
Thank you.
Answer: The running time should at least 119.32 seconds to be in the top 5% of runners.
Step-by-step explanation:
Let X= random variable that represents the running time of men between 18 and 30 years of age.
As per given, X is normally distrusted with mean
and standard deviation
.
To find: x in top 5% i.e. we need to find x such that P(X<x)=95% or 0.95.
i.e. 

Since, z-value for 0.95 p-value ( one-tailed) =1.645
So,
Hence, the running time should at least 119.32 seconds to be in the top 5% of runners.
Average speed = 300 m/min
Time = 1 min
Distance = Average speed x Time
Distance = 300 m/min x 1 min
Distance = 300 m
Hope this help <3
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