Q14: The tensile strength of manila ropes The tensile strength of manila ropes follows a normal distribution. A random sample of 16 manila ropes has a sample mean strength 4450 kg and sample standard deviation 115 kg.Suppose that we want to test whether the mean strength of manila rope is less than 4500 kg. At a significance level a - 0.05, the value of the test statistic and the conclusion for this test are:
Q14: The tensile strength of manila ropes The tensile strength of manila ropes follows a normal distribution. A random sample of 16 manila ropes has a sample mean strength 4450 kg and sample standard deviation 115 kg.Suppose that we want to test whether the mean strength of manila rope is less than 4500 kg. At a significance level a - 0.05, the value of the test statistic and the conclusion for this test are:
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Transcribed Image Text:Q14: The tensile strength of manila ropes
The tensile strength of manila ropes follows a normal distribution. A random sample of 16 manila ropes has a sample mean strength 4450 kg and
sample standard deviation 115 kg. Suppose that we want to test whether the mean strength of manila rope is less than 4500 kg. At a significance
level a = 0.05, the value of the test statistic and the conclusion for this test are:
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