test to determine the validity of the claim b) Identify left, right, or two-tailed test type i. Speedy Solutions is a delivery company that claims all deliveries average less than 72 hours. ii. The average miniature horse is less than 34 inches at the shoulder. Tiny Equines claims that their miniature horses are an average of 3 inches fewer than the breed average. iii. The 2011 average service time for Fast Fatz Burgers was 56 seconds. The store manager claims that the 2012 average is more than 5 seconds faster. iv. About half of Chinese prefer to eat healthy food.
test to determine the validity of the claim
b) Identify left, right, or two-tailed test type
i. Speedy Solutions is a delivery company that claims all deliveries average less than 72 hours.
ii. The average miniature horse is less than 34 inches at the shoulder. Tiny Equines claims that their miniature horses are an average of 3 inches fewer than the breed average.
iii. The 2011 average service time for Fast Fatz Burgers was 56 seconds. The store manager claims that the 2012 average is more than 5 seconds faster.
iv. About half of Chinese prefer to eat healthy food.
Q#2:
Blood glucose levels for obese patients have a mean of 100 with a standard deviation of 17. A researcher thinks that a diet high in raw cornstarch will have a positive or negative effect on blood glucose levels. A sample of 30 patients who have tried the raw cornstarch diet have a mean glucose level of 145.
i. Describe in your own words how you would set the critical regions and what they would be at an alpha level of .05.
ii. Test the null hypothesis and explain your decision.
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