What is the difference between a one-tail and a two-tail, Ask an Expert

Statistics

1. What is the difference between a one-tail and a two-tail test? How do we identify each?

2. What is meant by a p-value?

3. A basketball player has hit on 60% of her shots from the floor. If on the next 100 shots she makes 70 baskets, would you say her shooting has improved? Use a .05 level of significance.

4. An electrical firm manufactures light bulbs that have a length of life approximately normal with a mean of 800 hours and a standard deviation of 40 hours. Test, at a .05 level of significance, whether or not a sample of 36 bulbs with an average life of 788 hours has a µ equal to 800 hours.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9393119

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