Question

Marty Mangold is a guppy breeder, based in Bradenton, Florida. He has read in trade publications that the average number of baby guppies born from a mother is 50 per litter.

Marty decided to run an experiment to see if his average litter size is the sames as the population. Marty randomly selected 31 of his guppy litters and discovered that the average litter size 52.3 guppies with a standard deviation of 6.1 guppies.

Using α = 0.05, can Marty claim the size of his guppy litters to be the same as that of the population?

What is the appropriate null hypothesis?

Answer #1

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