The answer is A
To explain more on why it’s A
Because, Y, which is the shaded part on the graph
Is less than negative 2x, as you can see is above y
Answer: a. 0.1031; fail to reject the null hypothesis
Step-by-step explanation:
Given: Significance level : 
The test statistic in a two-tailed test is z = -1.63.
The P-value for two-tailed test : 
[By p-value table]
Since, 0.1031 > 0.05
i.e. p-value > 
So, we fail to reject the null hypothesis. [When p< then we reject null hypothesis ]
So, the correct option is a. 0.1031; fail to reject the null hypothesis.
I would need a graph chart to do this, sorry :/
Thanks for the question!
Since the turning point of the graph is 4 gigabytes. you can see that after 4, plan b is under plan a, meaning it is a smaller sum of money for the same amount.
So, the answer is that Plan B costs less for more than 4 gigabytes of data.
Hope this helps!
