Question

1. Use the following information for the next two problems.  A fair coin is one that has  = P(Head) = 0.50. Suppose that each student in a class tosses a fair coin 25 times and calculates , the percent of heads they observe in their sample.

   Suppose that one particular student gets 10 heads. That student would calculate  = 0.40. Identify the correct statement.

   	a.	0.50 is a statistic and 0.40 is a parameter
   	b.	Both 0.50 and 0.40 are parameters
   	c.	Both 0.50 and 0.40 are statistics
   	d.	0.50 is a parameter and 0.40 is a statistic

2. The value of  will vary from student to student. Find the mean () and the standard deviation () among the different values of .

   	a.	= 0.40  and   = 0.0096
   	b.	= 0.50  and   = 0.01
   	c.	= 0.50  and   = 0.10
   	d.	= 0.40 and   = 0.098

Answer 1

Answer - 1: 0.50 is a parameter and 0.40 is a statistic

Option D is correct.

Answer - 2: Mean = Population proportion = 0.40

Standard error = = 0.10

Option C is correct.