Mathematics, 02.12.2019 19:31 darwin59651
For population parameter μ = true average resonance frequency for all tennis rackets of a certain type, each of these is a confidence interval. (114.4, 115.6) and (114.1, 115.9) what is the value of the sample mean resonance frequency?
a. 114.5
b. 115.8
c. 114.1
d. 115.0
Answers: 1
![X[bar]= \frac{Upper bond + Low bond}{2}](/tpl/images/0399/5888/7f709.png)
![X[bar]= \frac{115.6+114.4}{2}](/tpl/images/0399/5888/38763.png)
= 115
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