The variability of sizes of the batch of screws were studied by the company owner. They took a sample of 20 screw and found out that the deviation, s ^ 2 = 0.0153m * m ^ 2 . The variation should only to be under ±0.1 mm2 to prevent reworks. At 5% CI, conduct hypothesis testing
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The variability of sizes of the batch of screws were studied by the company owner. They took a sample of 20 screw and found out that the deviation, s ^ 2 = 0.0153m * m ^ 2 . The variation should only to be under ±0.1 mm2 to prevent reworks. At 5% CI, conduct hypothesis testing.
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- Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury ( mmHg) and the standard deviation is 5.6. Assume the variable is normally distributed. Round the answers to at least 4 decimal places and intermediate z-value calculations to 2 decimal places.The mean score on a driving exam for a group of driver's education students is 60 points, with a standard deviation of 4 points. Apply Chebychev's Theorem to the data using k=2. Interpret the results.A population of score has μ = 90. In this population, a score of X = 100 correponds to z = 5. what is the population standard deviation?
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