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A sample of 35 different payroll departments found that employees worked an average of 240.6 days a year. If the population standard deviation is 18.8 days, find the 90% confidence interval for the average number of days worked by all employees who are paid through payroll departments.
edward and his friends cannot go outside when it is sunny because they are vampires. edwards hometown forks washington
a random sample of 16 students from the student body of a large university had an average age of 25 years and a sample
1. for a sample of 36 houses what would you expect the distribution of the sale prices to be? a real-estate agent has
A random group of apartments was selected from a city to analize the number of bedrooms they have. Is there evidence to reject the hypothesis that the apartments are equally distributed between 1 bedroom, 2 bedroom, and 3 bedroom apartments, at al..
use the following scenario to answer the next 4 questions. an industrial sewing machine uses ball bearings that are
Define the quasi-identical states of an LR(1) parsing machine to be those states whose kernel productions are identical. Such states are distinguished only by the look ahead symbols associated with their productions. Given the LR(1) machine built ..
Do they have the same probability
question response time at an online site can be modeled with an exponential distribution with a mean service of 5
The diameters of certain cylindrical items produced by a machine are r.v.'s distributed as N(m, 0.01). A sample of size 16 is taken and is found that x¯ = 2.48 inches.
The expense ratio of a mutual fund measures the percentage of the fund's assets used to pay for annual administrative overhead. Funds with higher ratios spend more of the fund's return to operate the fund.
a biologist wishes to estimate the effect of an antibiotic on the growth of a particular bacterium by examining the
Compute a 95% confidence interval for the mean saline of the tears. You select a random sample of 100 tear drops. The sample has an average salt concentration of 0.1 with a standard deviation of 0.01.
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