The accuracy of a coin-counter machine is gauged to accept nickels with a mean diameter of millimeters 21.21 mm. A sample of 36 nickles was drawn from a reported defective coin-counter machine located near a school. The sample had a sample mean of 21.213 mm and sample standard deviation 0.007 mm. Test the claim that the mean nickel diameter accepted by this coin-counter machine is greater than 21.21 mm. Test at the 0.01 significance level. (a) Identify the correct alternative hypothesis Ha : μ<21.21 μ=21.21 μ>21.21 Give all answers correct to 4 decimal places. (b) The test statistic value is: (c) Using the Traditional method, the critical value is: (d) Based on your asnwers above, do you: (i) Reject H0 (ii) Fail to reject H0
The accuracy of a coin-counter machine is gauged to accept nickels with a
Test the claim that the mean nickel diameter accepted by this coin-counter machine is greater than 21.21 mm. Test at the 0.01 significance level.
(a) Identify the correct alternative hypothesis Ha
:
- μ<21.21
- μ=21.21
- μ>21.21
Give all answers correct to 4 decimal places.
(b) The test statistic value is:
(c) Using the Traditional method, the critical value is:
(d) Based on your asnwers above, do you:
(i) Reject H0
(ii) Fail to reject H0
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