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Explain why the confidence level effects the sample size needed to obtain a particular margin of error?
According to the Bureau of Labor Statistics, the average hourly wage in US was $22.57 in May 2010. A random sample of 36 hourly workers was selected throughout the month.
Travelocity would like to measure the current average domestic airfare. The following data describes the airfares for 24 randomly selected tickets for travel in United States:
Determine the minimum sample size needed, using prior study that found theat 24% of residents said they support the penny. No preliminary estimate is availiable , compute the minimum sample size neede
Since all economies are faced with scarcity, how may nations attempt to reduce the human hardship associated with the scarcity?
A salesman can contact either one or two customers per day with the probability 1/3 and 2/3 respectively. Each contact will result in either no sale or $20,000 sale with probability 9/10 and 1/10 r
The following frequency distribution analyzes the scores on a test. Find the class boundaries of scores interval 95-99.
The frequency distribution below summarize the home sale prices in a city for a specific month. Determine the width of each class.
Use the rule of exponents to simplify the expression (5^4)^1/2. Simplify this expression. Write the answer with positive exponents. (m^1/4 n^1/2)^2 (m^2 n^3)^1/2
Assume the random variable x is continuous and has following cumulative distribution function
Expain the two steps for simplifying radicals? Can either step be deleted? If you could add a step that might make it easier or easier to understand, what step would you add?
Compute the vertex and the x-intercepts of the parabola:
A random sample of 49 selected from the population with standard deviation of 14 yielded mean = 125. The mean and the standard deviation of distribution of sample means are ____________ .
Assume a random sample of 49 is selected from population with standard deviation of 14. If the sample mean is 125, the 99% confidence interval to measure the population mean is between ____________ .
A rocket takes off at an angle of 20° from vertical. Two observers are standing 20 miles away from the lunch site, so that the launch site is directly in between them.
Search the internet for real applications of statistics in workplace. As a hint, type the word "statistics" followed by a topic of interest to you into the search engine.
A carpenter has been asked to build an open box with square base. The sides of box will cost $4 per square meter, and base will cost $5 per square meter. What are the dimensions of box of greatest
Your management team believes they have identified a resource allocation problem within the manufacturing department. They have asked you to perform an analysis of the current department resources t
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg.
A pair of hedge trimmers are 45 cm long from the pivot to the end of the handles. If the person applies of a force of 15 N on each handle and the blades are 3.5 cm long, how much force is applied to
There are three masses m1 = 2.0 kg, m2 = 5.0 kg and m3 = 7.0 kg. The mass are all affixed to a massless rod of length 15cm. m1 and m3 are at the ends and m2 is 10 cm from left where m1 is. Compute t
A street light is supported by two wires and each makes a different angle from each other. The one on the left is 32 degrees and the one on the right is 43 degrees. Find the tension in each wire if
Which of the given compounds are insoluble in water? How many grams of glucose (C6H12O6) are there in 257.15 mL of 21.68 %(m/v) glucose-water solution?
The activity of isotope was determined to be 4000mci on Monday at 10.00 am on Tuesday at same time its activity was found to be 3200mci. Determine the isotope's half-life.
A wall was constructed in middle of "near field" region of Non-ionizing redaction source. Find out the attenuation factor for this wall.