Question
In: Statistics and Probability
the time it takes for babies to learn to walk is known to be normal distributed...
the time it takes for babies to learn to walk is known to be normal distributed with mean 9 months and standard deviation of 1.5 months. what percent of babies learn to walk.
Solutions
Expert Solution
here in the given question mean = 9-month
standard deviation =1.5 month
we have to find the percentage of babies learn to walk in the
given time between 7.5 months(
) to
10.5 months(
)
hence,
step 1:
find the z value:i.e.
Z=(X-)/
Hence the percentage of babies to walk in a given interval is =(0.68268*100)= 68.27%
orchestra answered 2 years agoRelated Solutions
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