At 20 can you support the marine biologists claimgt

Assignment Help Basic Statistics

Reference no: EM13642222

A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 10 mature female pink seaperch collected in fall has a mean length of 111 millimeters and a standard deviation of 10 millimeters. A sample of 2 mature female pink seaperch collected in winter has a mean length of 96 millimeters and a standard deviaiton of 7 millimeters. At ? = .20, can you support the marine biologist's claim> Assume the population variances are equal. Assume the samples are random and independent, and the populations are normally distributed.

Critical values:

Answer: 1.372, -1.372

Rejection region:

Answer: t < -t0, t > t0

Standardized test statistic:

Answer: t= 1.988

Reference no: EM13642222

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