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It has been reported that the average U.S. office worker receives 14 fax messages per day. For purposes of this exercise, we will assume that the daily number of fax messages is normally distributed with a standard deviation of 5.0 messages.
For an office in which 10 workers are employed, and considering these persons as a simple random sample of all U.S. office workers, what is the probability that the office will receive at least 160 fax messages (i.e., a sample mean of at least 16 faxes per worker) next Wednesday?
What are the coefficients for the significant variables and using the intercept coefficient and only the significant variables, what is the equation?
Compensation to passengers who lose their luggage. By how much should the airline increase fares? Why? Explain, using the ideas of a random variable and its expectation.
The article "The Statistics of Phytotoxic Air Pollutants" (J. of Royal Stat. Soc., 1989: 183-198) suggests the lognormal distribution as a model for SO2 concentration above a certain forest. Suppose the parameter values are µ = 1.9 and σ = .9.
Estimate the interquartile range of the cholesterol levels.- Above what value are the highest 15% of women's cholesterol levels?
The regression line yˆ2 = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). The residual sum of squares will be:
A cell phone company collects data from a random sample of 500 households. The results indicate that 135 of the households would add an extra cellular number, provided it was offered at a reduced monthly cost.
Write a sample result section, discussing your data screening activity (this section should be in APA format).
What is z-score and how do you find the area under standard normal distribution curve. Find the area under the normal distribution curve between z=0 and z=2.34.
a random sample of 130 human body temperatures provided by allen shoemaker in the journal of statistical education has
In a representative sample of 1000 adult Americans, only 420 could name at least one justice who is currently serving on the U.S. Supreme Court. Using a significance level of 0.01, carry out a hypothesis test to determine if there is convincing ev..
Particular brand that they buy. A retailer has ordered a consignment of 5000 such lamps for its chain store nationwide. What is the probability that, the number of defective lamps will be 500 or less?
Assessment 3 gives you the opportunity to apply theory and research in a practical way by critically analysing the practice of strategic HRM in organisations. You have three options to choose from in this assessment task. Prepare a report that ans..
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