Confidence interval of the true proportion of teenage boys
It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What is the 90% confidence interval of the true proportion of teenage boys who have received speeding tickets?
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When a ball rolls down a incline plane it gains speed,because of gravity,when rolling up it losees speed because of gravity. Why doesn't gravity play a role when it rolls on a horizontal surface?
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A photon in the gamma ray region of the electromagnetic spectrum has an energy of 9.12 × 10-14 J, calculate the wave length in pm of the photon. Express answer in scientific notation.
There are six 90º elbow (screwed) and two open gate valves. Assume iron fittings. Calculate the total head loss for this section.
A college believes that 24% of applicants to that school have parents who have remarried. How large a sample is needed to estimate the true proportion of students who have parents who have remarried to within 3% with 90% confidence?
A car driving along a highway at a speed of 22.9 m/s strays onto the shoulder. Evenly spaced parallel grooves called "rumble strips" are carved into the pavement of the shoulder. Rolling over the rumble strips causes the car's wheels to oscillate
After this force is applied, the length of the cylinder becomes 11.00500cm. Find the stress, strain and elastic modulus to three digits.
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