Question

The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual.

For a sample of

nequals=6464​,

find the probability of a sample mean being less than

21.521.5

if

muμequals=2222

and

sigmaσequals=1.171.17.

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For a sample of

nequals=6464​,

the probability of a sample mean being less than

21.521.5

if

mu equals 22μ=22

and

sigmaσequals=1.171.17

is

negative 3.42−3.42.

​(Round to four decimal places as​ needed.)

Would the given sample mean be considered​ unusual?

The sample mean

would

would not

would

be considered unusual because it has a probability that is

greater

greater

less

than​ 5%.

Answer 1