Conduct the appropriate hypothesis test and compute the test statistic. A company that produces fishing line...
Conduct the appropriate hypothesis test and compute the test statistic.
A company that produces fishing line undergoes random testing to see if their fishing line holds up to the advertised specifications. Currently they are producing 30-pound test line and 20 randomly selected pieces are selected to test the strength. The 20 pieces broke with an average force of 29.1 pounds and a sample standard deviation of 2 pounds. Assuming that the strength of the fishing line is normally distributed, perform the appropriate hypothesis test at a 0.05 significance level in order to determine whether there is sufficient sample evidence to conclude the fishing line breaks with an average force of less than 30 pounds.
Question 25 options:
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Yes, because the test statistic is -2.52 |
|
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No, because the test statistic is -2.52 |
|
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Yes, because the test statistic is -2.01 |
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Cannot be determined |
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No, because the test statistic is -2.01 |
Homework Answers
Test statistic,
t = (xbar - mu)/(s/sqrt(n))
t = (29.1 - 30)/(2/sqrt(20))
t = -2.01
P-value Approach
P-value = 0.0294
As P-value < 0.05, reject the null hypothesis.
Yes, because the test statistic is -2.01
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Conduct the appropriate hypothesis test and compute the
test statistic.
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