A recent personalized information sheet from your wireless phone carrier claims that the mean duration of all your phone calls w
as μ = 2.9 minutes with a standard deviation of σ = 1.9 minutes. From a random sample of n = 50 calls, your parents computed a sample mean of 
= 3.6 minutes and a sample standard deviation of s = 2.6 minutes.
Sketch the population distribution for the duration of your phone calls. What are its mean and standarddeviation?
Sketch the population distribution for the duration of your phone calls. What are its mean and standarddeviation?
1 answer:
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Answer:
Step-by-step explanation:
see the attached figure to better understand the problem
step 1
In the right triangle ABC find the length side BC
we know that
step 2
In the right triangle ABD find the length side BD
we know that
step 3
we know that
The distance between the two boats is the length side CD
substitute the values
