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The weights in pounds of discarded plastic from a sample of households summary statistics are n=62, x=1.911, s=1.065, use a .05 significance level to test the claim that the mean weight of discarded plastic from the population of households is greater than 1.800. ID the null and alternative hypothesis. What is the Test statistic What is the P value What is the Critical Value What is your final conclusion?
Cash withdrawals (in multiples of $20) at an on-campus ATM for a random sample of 30 Fridays and 30 Mondays are shown below.
Assuming that any newspaper left over has no value and that running short has no effect on any customer's tendency to return, determine the losses due to understockting and overstockting.
the life in hours of a computer processing unit cpu is modeled by a weibull distribution with parameters szlig 3 and d
Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..
The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 14 minutes. What is the probability that the part can be assembled in 7 minutes or less?
How would you approach identifying the two correct time series in #1 to the proceed to merge them into one and make a weekly estimate of attendance?
At α = .05 in a left-sided test, find the β risk and power assuming that the true mean is really 380 square feet per gallon. (b) Construct a left-sided power curve, using increments of 5 square feet (400, 395, 390, 385, 380).
The annual salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience.
q1 the average age of ceos is 56 years. assume the variable is normally distributed. if the standard deviation
If one item is chosen at random, what is the probability that it is less than 9.1 inches long? what is the probability that exactly 46 will grow into a healthy plant?
Draw the suitable distribution, and locate critical regions for α = .05. Compute test statistics (z score) for the sample.
Binomial Distribution: Control Charts this problem will be referred to in the study of control charts. In the binomial probability distribution, let the number of trials be n = 3, and let the probability of success be p = 0.0228.
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