Answer:
The value at x =3 is undefined for the given expression
Step-by-step explanation:
Given expression is
To find for what value of x is undefined in the given expression :
If we put x=3 in the above expression we get
Therefore
The value at x =3 is undefined for the given expression
Answer: 2.460
Step-by-step explanation:
The formula of Margin of Error for (n<30):-
Given : Sample size : n= 18
Level of confidence = 0.90
Significance level :
Using the t-distribution table ,
Critical value :
Standard deviation:
Then, we have
Hence, the margin of error (ME) of the confidence interval with a 90% confidence level = 2.460
