Short Answer Questions 14. What are the values for the mean and the standard dev

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Short Answer Questions 14. What are the values for the mean and the standard deviation when scores are (Hint: think about the two number lines beneath the normal curve) Doe change? (4 pts transformed to z-scores? s the shape of a distribution 15. Explain what is measured by the sign of a z-score and what is measured by its numerical value. (4 pts) 16. Dr. Frankenstein is running an experiment to test if his new hairspray "Frankenspray" maintains its hold longer than the current leader in hair products "Monstermoose". He replicates his experiment multiple times and compares the mean of his trials to the mean of his competitor. Please give an example of both a null (HO) and alternative (HI) hypothesis. (4 pts) 17. In hypothesis testing a Type I error or Type II is always a possibility. How is a Type I and Type I error defined? (4 pts)

Explanation / Answer

14) Mean will be 0 and Standard deviation would be 1 when transferred to z scores.No Shape will not change

15) Sign of z score tells us whether the raw score is less the mean or the above the mean and its numerical value tells us how many standard deviations is away from the mean

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