Answer:
Kindly check attached picture
Step-by-step explanation:
Given the following :
First term (a) = 3
Second term = - 6
third term = 12
Fourth term = - 24
We can obtain the common ratio of the series using the relation :
(2nd term/ 1st term) = (3rd term/2nd term) = (4th term/ 3rd term) =....
(-6/3) = (12/-6) = (-24/12)
-2 = - 2 = - 2
Further explanation can be found in attached picture
Solution :
a).
Given : Number of times, n = 25
Sigma, σ = 0.200 kg
Weight, μ = 13 kg
Therefore the hypothesis should be tested are :
b). When the value of
Test statics :
= 45.5
P-value = 2 x P(Z > 45.5)
= 2 x 1 -P (Z < 45.5) = 0
Reject the null hypothesis if P value < α = 0.01 level of significance.
So reject the null hypothesis.
Therefore, we conclude that the true mean measured weight differs from 13 kg.