A random sample of n = 10 flash light batteries with a mean operating life X=5 hr. And a sample stan

Discussion in 'Calculator Requests' started by math_celebrity, Jan 7, 2017.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A random sample of n = 10 flash light batteries with a mean operating life X=5 hr. And a sample standard deviation S = 1 hr. is picked from a production line known to produce batteries with normally distributed operating lives. What's the 98% confidence interval for the unknown mean of the working life of the entire population of batteries?

    Small Sample Confidence Interval for the Mean test
    4.1078 < u < 5.8922
     

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