Hey all,

Have a homework problem that I want to see if I did right

Problem is:

Suppose a friend tells you that the trout has a mean (mu) of 19 inches. However, the survey reports that for a random sample of 51 fish caught the mean length was x bar = 18.5 inches with an estimated S.D. of s=3.2 inches. Do these data indicate that the average length of a trout caught in the lake is les than mu=19 inches? Use 0.05

Work:

18.5-19/(3.2/sq rt 51)

=-.500/.448

=-1.116 =-1.12

P value = .1314

Since .1314 > .05, we cannot reject H0

Have a homework problem that I want to see if I did right

Problem is:

Suppose a friend tells you that the trout has a mean (mu) of 19 inches. However, the survey reports that for a random sample of 51 fish caught the mean length was x bar = 18.5 inches with an estimated S.D. of s=3.2 inches. Do these data indicate that the average length of a trout caught in the lake is les than mu=19 inches? Use 0.05

Work:

18.5-19/(3.2/sq rt 51)

=-.500/.448

=-1.116 =-1.12

P value = .1314

Since .1314 > .05, we cannot reject H0

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