Sunday, May 8, 2011

Tulips in the garden:pratice problem


The amount of tulips that blossom in Azia's tulip garden is normally distributed with a mean of 50 tulips and a standard deviation of 4. She tries a new fertilizer on a sample of 100 seeds and she is able to increase the amount of tulips that blossom by 16 percent, giving her 58 tulips. At a 5% confidence level does the new fertilizer really increase the amount of tulips that blossom. Use a hypothesis test.

1 comment:

  1. H0 m = 50
    H1 m>50

    
    1.645 at a=.05 .
    Computation
    Z= (58-50)/(4/(sqrt(80)))=17.888

    Hypothesis is rejected!

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