The mean weight of a group of dogs in a dog show is 38 pounds. If a certain dog in the show has a z-score of 0, how much does it weigh?

The weight of dogs x = 38pounds

Step-by-step explanation:

Step(i):-

Given that the mean weight of a group of dogs

       μ = 38 pounds

Let 'x' be the weight of dogs

Let 'x' be the random variable in normal distribution

Given that z-score is zero

Step(ii):-

we know that the z-score

            ⇒  

            ⇒ 0 = x-38

           ⇒  x-38 = 0

          ⇒   x =38

Final -

The weight of dogs x = 38pounds

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: