The average speed of greyhound dogs isabout 18.7 meters per second. A particular

Question

The average speed of greyhound dogs isabout 18.7 meters per second. A particular greyhound breeder claimsthat her dogs are faster than the average greyhound. In a sample of30 of her dogs, they ran, on the average, 19.4 meters per secondwith a standard deviation of 1.5 meters per second. At= 0.05, does the data support herclaim?



a. Yes, because 2.56 falls in thecritical region

b. No, because 2.56 falls inthe critical region

c. Yes, because 1.65 fallsin the critical region

d. No, because 1.65 falls inthe critical region

Explanation / Answer

a. Yes, because 2.56falls in the critical region

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