Given a normal random variable X with mean and standard ...

[Destiiny22]

Given a normal random variable X with mean  and standard deviation , the standard normal random variable associated with x is Z = (X - )/.
 
  Indicate whether the statement is true or false

Question 2

Find the margin of error for a 90 confidence interval for the difference in the means of the two populations.
 
  A) 2.75
  B) 2.29
  C) 1.24
  D) 1.86

[TheDev123]

Answer to Question 1

TRUE

Answer to Question 2

C

[Destiiny22]

Thanks for the timely response, appreciate it

[31809pancho]

Excellent