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.
Answer:
see answer in the image attached below
Step-by-step explanation:
I hope this answer will help you. Have a nice day !
5 - 5 = 0
7 - 5 - 2 = 0
I think
The relative frequency of rolling a 4 is 2/9<span>.
</span><span>The experimental probability of rolling a 2 is greater than the theoretical probability of rolling a 2.</span><span>
</span>The experimental probability of rolling a 1 is less than the experimental probability of rolling a 6.
Answer: A. 180 nickels
Step-by-step explanation:
20 nickels= $1
9×20=180