Answer:
The test statistic is 
Step-by-step explanation:
From the question we are told that
The population mean is 
The The level of significance is 
The sample size is n = 18
The null hypothesis is 
The alternative hypothesis is 
The sample mean is 
The standard deviation is 
Generally the test statistics is mathematically represented as

substituting values


Answer:
2X
Step-by-step explanation:
bill has X and Ben has twice X so Ben has 2X
Step-by-step explanation: The figure shown here is a straight path between points that extends forever in both directions, so it's called a line.
Since a line doesn't have endpoints, it doesn't matter which
two points on the line we use to name the line.
I have attached 5 possible names for the line below.