Question

Asked Nov 4, 2019

Step 1

From the given information,

Sample size (n) =315, mean (μ) =25.6, standard deviation (σ) =5.3 and level of significance (α) =0.05.

Step 2

(a) Null and alternative hypotheses are

H_{0}: μ>25 (A pediatrician claims that the mean weight of one-year old boys is greater than 25 pounds).

H_{a}: μ≤25 (A pediatrician claims that the mean weight of one-year old boys is less than or equal to 25

Pounds (or not greater than 25)).

Step 3

(b) Now, test sta...

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