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Manufacturing and Product Development Premanufactured wooden roof trusses allow builders to complete projects faster and with lower on-site labor costs. The connector plates for trusses are made from Grade A steel and are hot-dip galvanized. The thickness of a truss connector (in inches) varies slightly and has a uniform distribution with a = 0.036 and b = 0.050.a. If the manufacturer will only use connectors with a minimum thickness of 0.04 inch, what proportion of connectors is rejected?b. Suppose a truss connector is selected at random. Find the probability that the truss connector has a thickness between 0.042 and 0.045 inch.c. Find the mean, variance, and standard deviation of the thickness of a truss connector.
write a brief description of a real-world example in which one measure of central tendency provides useful information
Ten pairs of points yielded a correlation coefficient y of 0.79. If a=0.05, which of the following statements is correct if H 0:P=0? (Do not calculate a t-value.)
Find the standard error of mean. Also establish an interval estimate around the sample mean using one standard deviation of the mean.
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a sample survey interviews an simple random sample of 267 college women. suppose as is roughly true that 70 of all
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In a large clinical trial of 500 patients treated with a new drug, 40 reported sideeffects how many patients would need to be sampled to estimate the desired proportion to within a margin of error of 1%, using 98% confidence?
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heights of men on a baseball team have a bell shaped distribution with a mean of 184 cm and a standard deviation of 5
A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750.
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