Find mean and standard deviation of the sample of size
The means of two samples of size 50 and 100 respectively are 54·4 & 50·3 and the standard deviations are 8 & 7. Obtain the mean and standard deviation of the sample of size 150 obtained by combining the two samples.
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Aussie Yarn Co. is a U.S. producer of woolen yarn made from wool imported from Australia. Raw wool is processed, spun, and finished before being shipped out to knitting and weaving companies.
A soap bubble with walls 398 thick floats in air. If this bubble is illuminated perpendicularly with sunlight, what wavelength of visible light will be absent in the reflected light? Assume that the index of refraction of the soap film is 1.33.
The company is considering a purchase of equipment that would reduce its direct labor costs by $114,088 and would change its manufacturing overhead costs to 30% variable and 70% .
Calculate the average annual dividend per share for each class of stock for the six-year period. If required, round your answers to two decimal places.
The standard deviations are 8 & 7. Obtain the mean and standard deviation of the sample of size 150 obtained by combining the two samples.
Santana Rey created Business Solutions on October 1, 2011. The company has been successful, and Santana plans to expand her business. She believes that an additional $86,000 is needed and is investigating three funding sources.
A pump discharges a liquid into a drum aat the rate of 0.032 m3/s. the drum,1.5 m in dia and 4.2m in length, can hold 3000 kg of the liquid. Find the density of the liquid and mass flow rate of the liquid handled by the pump.
On January 1, 2011, Walter Scott Co. leased machinery under a 6-year lease. The machinery has a 9-year economic life. The present value of the monthly lease payments is determined to be 85% of the machinery's fair value.
What business risks does Dell face that threaten its ability to satisfy stockholder expectations? What are some examples of control activities that the company could use to reduce these risks?
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