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A large study of the heights of 1010 adult men found that the mean height was 70 inches tall. The standard deviation was 6 inches. If the distribution of data was normal, what is the probability that a randomly selected male from the study was between 64 and 82 inches tall? Use the 68-95-99.7 rule (sometimes called the Empirical rule or the Standard Deviation rule). For example, enter 0.68, NOT 68 or 68%.
Round your answer to three decimal places.
Caution: Using tables or Excel for this may produce a wrong answer. Use the 68-95-99.7 rule.
What sampling method is best suited for such a survey? Why? Draw the sample using the random number table and bring out the rationale of the procedure. Limit your sample to 25 persons.
What is the minimum sample size (of attempts) if the proportion is to be estimated within ±2% with 95% confidence? What is the associated total cost?
Assume that in a hypothesis test with null hypothesis H 0 : μ = 14.0 at a = 0.05, that a value of 13.0 for the sample mean results in the null hypothesis not being rejected. That corresponds to a confidence interval result of:
How does an understanding of the global drug trade and its history help us understand the situation today? How have drugs shaped human history?
What is critical z-value which corresponds to confidence level of 88%.
Describe the following types of sample designs, noting their similarities and differences. State also when it is appropriate to use each type of sample de- sign. Random sample and Simple random samples
if 3 different factor levels show a lot of variation between levels this impliesa a large amount of error within each
Graph the least-squares line on your scatter diagram. Be sure to use the point (x, y) as one of the points on the line.
Lagrangian Relaxation in Multidimensional Assignment) Apply the Lagrangian relaxation method to the multidimensional assignment problem of Example 10.7, in a way that requires the solution of 2-dimensional assignment problems. Derive the form of ..
In recent years, fishermen have suffered financial hardship because of shortened fishing seasons, reduced catches and lower market prices. Moreover, fishermen have complained about price fluctuations and have called for a system of minimum prices.
1) Determine E(X) 2) Determine the expected value of the SUM of three draws, with replacement, from the set of numbers, 3) Determine the expected value of the AVERAGE of the three draws made in the second question.
the random variable x represents the number of cars per household in a town of 1000 households. find the probability of
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