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A large population of metal rods have an average diameter of .943 inches with a standard deviation of .001 inches. The engineering specification for the rods requires that they be between .941 and .944 inches. Using the standardized normal table, determine the percentage of the population that should meet the requirement. Draw a normal distribution, and indicate the area under the curve that represents your answer.
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In a randomized clinical trial of timolol vs. placebo in patients surviving acute myocardial infarction, the total deaths at an average of 24 months after treatment were found to be 65 out of 720 in the Timolol group and 112 out of 860 in the plac..
Perform the trend analysis of Pf with incrementally increasing number of the simulation cycles, and calculate the statistical uncertainty in the estimate expressed as the coefficient of variation.
The concentration of glucose(mg/dl) for all samples was measured on one run of a spectrophotometer 1. give the statistical model and full explain each component.
From a practical point of view, what is the difference between the frequency distribution and relative frequency distribution? Why is a cumulative relative frequency distribution so much more informative that just the relative frequency distributi..
Temperature in certain city for the month of June follows a uniform distribution over the interval 61° F to 91° F. Find the temperature which 90% of the June days exceeds?
What is an interaction? Describe an example and identify the variables within your population (work, social, academic, etc.) for which you might expect interactions?
A recent study reported that the prevalence of hyperlipidemia (defined as total cholesterol over 200) is 30% in children 2-6 years of age. If 12 children are analyzed,
At a 5% level of significance, is there enough evidence from this survey to conclude that more than half of all adults would rather have $100 than a day off?
a) Compute a 95% Confidence Interval for the true population proportion of successes. b) Based on this analysis can you conclude that the new system meets the requirement? Explain your conclusion.
Should Martha use an independent-samples t-test or a related samples t-test? Explain your answer.
A human factors psychologist studied three computer keyboard designs.
Determine the value of correlation coefficient between these 2 variables?
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