Jose is the manager of a children’s baseball league. Jose wants to know if the four new teams (teams A, B, C, and D; the sample) that were added this year differ from the whole population of children’s baseball teams across the nation in terms of the number of games they won last season. For the whole league (the population), the population mean = 10.13 games won, and the σ (population SD) = 5.12.  

Below are the number of games won for the four new teams this year

TeamNumber of games won
A1
B2
C4
D2
  1. State the null hypothesis

A. H0: The sample drawn from the population reflects the population, or M ≠ µ

B. H0: The sample drawn from the population reflects the population, or M = µ

A. H1: The sample drawn from the population does not reflect the population, or M ≠ µ

B. H1: The sample drawn from the population reflects the population, or M = µ

A. The level of risk is .01

B. The level of risk is .05

C. The level of risk is .1

D. The level of risk is .5

ANOVA

A. Z score test

B. Correlational test

C. One-sample Z test

D.

E. T-test

A. 1.96

B. 0.05

C. 2.10

D. 3.25

A. Fail to reject the null hypothesis

B. Reject the null hypothesis

  1. Write up your results as you would see it in a results section of an empirical research paper:
  2. Jose is also the coach for 4 teams in the league (Teams E, F, G, and H). He wants to know if his four teams are significantly different from the whole population. Does this group significantly differ from the population? What is the z value for this new sample? Round your answer out to two decimal places.

Number of Games Won by Team 

TeamsNumber of Games Won
E10
F15
G12
H3
  1. Do Joes’s 4 teams that he is the coach for significantly differ from the whole population?

A. Yes

B. There is not enough information to answer this question

C. No