The accounting at GEICO notices that the average claim might be larger than $1800, which was previously set as a true average cl
aim amount. If the actual average is higher, the company will be loosing money in the long run. They ran domly select 45 claims, and calculate a sample mean of S1,920.
Suppose that the variance of claims is known to be equal to S1600.
(a) Set the significance level to α 0.05 and use the hypothesis testing to check if the average claim is larger than $1800.
(b) Find the probability of Type I error.
(c) Find the p-value corresponding to the given sample.
Let x be the price of a cupcake.
There are 24 cupcakes so it will be 24x.
Solution:
24x+16=52
24x=52-16
24x=36
Divide both sides by 24
X=1.5.
The price of each cupcake is 1.5$
