Business Statistics Pre Assignment

Business Statistics Pre Assignment

1.4         Chapter 1

1.  A. population – full time first year students

         B. sample – 2,821 full time first year students

C. parameter – 3727 students

D. average hours spent studying 4.6 hours

1. A.  Population – Student body of university of Wisconsin 40,858

Sample – 100 Wisconsin students

B. no, that means that only means of a representative sample of the university of Wisconsin study body population, 29% of the

sampled students responded “zero”, not the entire student body.

C. Sample statistic

2.6        Chapter 2

        1)        A.  continuous quantitative

                    B.  discrete quantitative

                C. Qualitative

                D. Discrete quantitative

        2)         A. sample mean = 0

                B. sample media = 9

                C. range = 8

                D. sample standard deviation = 2.21

                E. z-score of 5 is -1.81 and it is not an outlier

                F. 95% rule means it is between 4.6 and 13.4[pic 1]

                G.

3.5         Chapter 3

1. Scenario 1 – Experimental

Scenario 2 – Observational

1. A. Treatments – the 3 types of feed (A,B,C) distributed

B. Experimental Units – feed was given to 12 pens, so pens are the experimental units with 3 pigs in each pen