## 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.

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H0 m = 50

ReplyDeleteH1 m>50

1.645 at a=.05 .

Computation

Z= (58-50)/(4/(sqrt(80)))=17.888

Hypothesis is rejected!