A sample is used to obtain a 95 percent confidence interval for ...

[OSWALD]

A sample is used to obtain a 95 percent confidence interval for the mean of a population. The confidence interval goes from 15 to 19.
 
  If the same sample had been used to test the null hypothesis that the mean of the population is equal to 20 versus the alternative hypothesis that the mean of the population differs from 20, the null hypothesis could be rejected at a level of significance of 0.05. Indicate whether the statement is true or false

Question 2

The accountant for a large U.S. company is interested in finding the probability that an account will have an incorrect balance due to being overstated or being understated. To find this probability, which probability rule is she likely to use?
 
  What will be an ideal response?

[jessofishing]

Answer to Question 1

TRUE

Answer to Question 2

The key word here is or, which, in dealing with probability, always means addition. Thus, the addition rule will need to be used.

[OSWALD]

Gracias!

[ryansturges]

Thanks for the timely response, appreciate it