The probability is 95 that it will take at least how long to ...

[james0929]

The probability is 95 that it will take at least how long to assemble a component?
 
  A) 12.7
  B) 11.7
  C) 12.1
  D) 11.1

Question 2

Describe briefly what is meant by simple random sampling.
 
  What will be an ideal response?

[yasmin]

Answer to Question 1

C

Answer to Question 2

Simple random sampling is a procedure used to select a sample of n objects from a population in such a way that each member of the population is chosen strictly by chance, each member of the population is equally likely to be chosen, and every possible sample of a given size, n, has the same chance of selection. This method is so common that the adjective simple is generally dropped, and the resulting sample is called a random sample.