Explain how the sign test is based on the binomial distribution ...

[Mollykgkg]

Explain how the sign test is based on the binomial distribution and is often approximated by the normal distribution?

Question 2

Using the standard normal curve, the probability or area between z = 1.28 and z = 1.28 is 0.3997.
  Indicate whether the statement is true or false

[alexisweber49]

Answer to Question 1

The sign test is a binomial experiment of n trials (the n data observations) with two outcomes for each data (+) or ( ), and p = (+) = 0.5 . The variable x is the number of the least frequent sign.

Answer to Question 2

F

[Mollykgkg]

Thanks for the timely response, appreciate it

[billybob123]

Gracias!