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Question: The Screw Right Company claims their 3 / 4 inch screws are within ±0.23 of the claimed mean diameter of 0.750 inches with a standard deviation of 0.115 inches. The following data were recorded
The screws were randomly selected from the local home repair store.
a. Find the mean diameter and standard deviation for the sample
b. Find the probability that 50 randomly selected screws will be within the stated tolerance levels. Is the company's diameter claim plausible?
Make a decision regarding the null hypothesis. Is there a significant correlation between a runner's finishing place and the amount the runner trained?
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Only 4% of people have Type AB blood. A bloodmobile has 12 vials of blood on a rack. If the distribution of blood types at this location is consistent with the general population, what's the probability they find AB blood in:
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prove for each positive integer n the number n can be written as a sum of n terms na1a2a3.....an where 1a1lta2ltltan
The port of Trop can service only 1 ship at a time. However, there is mooring space for 3 more ships. Trop is a favorite port of call, but, if no mooring space is available the ships have to go to the next port.
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If profit earned in the manufacture and sale of X units of a product is P dollars where: P = 10X - 0.001X2
Did Your Mother's Breakfast Determine Your Sex?- A study published in 2008 by the British Royal Society seemed to find just that.
the mean score on a physical fitness test for division i student-athletes is 947 with a standard deviation of 205. if
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