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A beam has a solid square cross section of 100mm and is simply supported by two supports 3 metres apart. Cauculate the dead load that can be safely supported when applied to the midle of the beam.
sigma = M/Z
M = 3W/4
Z = d^3/6
Sigma = (3W/4) / (d^3/6) now must rearrange the formula to find W and then substitute in the correct values.
in a gallop poll of 1005 randomly selected americans in april 2006 482 responded yes to the question do you consider
What is the point estimate for the proportion of people preferring model B, write suitable null and alternative hypotheses in words and symbols for this problem.
For a sample of 12 items from a normally distributed population for which the standard deviation is s=17.0, the sample mean is 230.8. At the 0.05 level of significance
the pearson product-moment correlation coefficient r requires that variables be measured with .a. an interval or ratio
Linda would like to maintain a 90% service level. what safety stock level do you recommend for BX-5?
Perform all of the calculations to complete this table and compute the chi-square statistic and calculate degrees of freedom for this chi-square test for goodness-of-fit.
use the fact that the standard normal distribution integrates to 1 to evaluate the following integral. i.e. useintegral
Given the following raw scores, calculate the following values: Range, Variance and Standard Deviation, show your calculations: Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3
The maker of refrigerators buys bolts from two suppliers, and it is very important that the mean widths of the bolts received from both suppliers are equal since they must be used interchangeably.
Develop the "best" regression model possible using this set of variables to help you predict the Risk. State your final model. Interpret the coefficients for the model (i.e. what do the numbers mean?).
At the .10 significance level, can we conclude that there is a difference in the length of time the two types of treatment lasted?
Carry out the appropriate hypothesis test for testing the null hypothesis that the correlation between FEV values is greater among identical twins than among faternal twins.
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