In: Statistics and Probability
The heights of a
simple random sample of soccer players in a particular league are
given below. Can you conclude at the 5% level of significance, that
the average height of soccer players in the league sampled is over
182 cm? Assume that the heights of soccer players is normal.
Show all of your work, include all necessary steps, and be complete
in your answer and explanation.
193 | 190 | 185.3 | 193 | 172.7 | 180.3 | 186 | 188 |
The table given below
X | ||
193 | 48.47641 | |
190 | 15.70141 | |
185.3 | 0.543906 | |
193 | 48.47641 | |
172.7 | 177.8889 | |
180.3 | 32.91891 | |
186 | 0.001406 | |
188 | 3.851406 | |
Sum | 1488.3 | 327.8588 |
From table ,
Sample size=n=8
The sample mean is ,
The sample standard deviation ,
Hypothesis : Vs ( Claim )
The test statistic is ,
d.f.=degrees of freedom=n-1=8-1=7
The critical value is ,
; From t-table
Decision : Here , the value of the test statistic does not lies in the rejection region.
Therefore , do not reject Ho.
Conclusion : Hence , there is not sufficient evidence to support the claim that the average height of soccer players in the league sampled is over 182 cm.