The two intervals (114.4, 115.6) and (114.1, 115.9) are confidence intervals (computed using the same sample data) for μ = true average resonance freq

ruigE

ruigE

Answered question

2021-05-09

The two intervals (114.4, 115.6) and (114.1, 115.9) are confidence intervals (The same sample data was used to calculate both values) for μ= true average resonance frequency (in hertz) for all tennis rackets of a certain type.
a. What is the value of the sample mean resonance frequency?
b. The confidence level for one of these intervals is 90% and for the other it is 99%. Which is which, and how can you tell?

Answer & Explanation

curwyrm

curwyrm

Skilled2021-05-10Added 87 answers

To conclude,
(a) The sample mean resonance frequency is 115.
(b) The confidence level of I1=(114.4,115.6) is 90% and confidence level of I2=(114.1,115.9) is 99%

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