Instructor-created question Question Help dlaims pugs weigh about 20 lbs on avea

Question

Instructor-created question Question Help dlaims pugs weigh about 20 lbs on avearage. You think it may be less. To test your hypothesis, you develop My: ?-20 versus H, of a simple random sample of 19 pugs. Assume the population of pug weights is known to be normaly distributed.Answer parts (oa c) ?Click here to view the t-Distribution Area in Right Tail. (a) If your mean sample weight is 18.2 pounds with a standard deviation of 3.6 pounds, compute the test statissc. (Round to two decimal places as needed.) (b) Approximate the P-value. Choose the correct range for the P-value below O A. P-value

Explanation / Answer

Solution:- ? = 20, s = 3.6, x = 18.2, n = 19

(a) t = (x-?)/(s/sqrt(n))

= (18.2 - 20)/(3.6/sqrt(19))

= -2.1794

= -2.18

(b) option C.

One-tailed probability (right tail): 0.97861136

One-tailed probability (left tail): 0.02138864

Two-tailed probability: 0.04277728

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