Suppose that the weight of a Beagle varies Normally with mean 26 pounds and standard deviation...
Suppose that the weight of a Beagle varies Normally with mean 26 pounds and standard deviation 3. What is the probability that a randomly selected Beagle weighs between 20 and 28 pounds?
BE CAREFUL: YOU MUST USE THE TABLE TO GET THIS ANSWER CORRECT. Round your z-scores to two decimal places before using the table.
Homework Answers
Solution :
Given that ,
mean = 
= 26
standard deviation = 
= 3
P(20< x <28 ) = P[(20-26) /3 < (x - 
) / < (28-20) /3 )]
= P( -2< Z < 2.67)
= P(Z <2.67 ) - P(Z < -2)
Using z table
= 0.9962-0.0228
probability= 0.9734
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