3. A quality control marketing manager orders parts and the parts are shipped in lots of sizes 15. When lots arrive, the quality manager randomly inspect 4 parts from a lot. The lot is rejected if at least one of the parts is defective Of all lots of size 15 that arrive, 20% have 5 defective parts and 80 percent have 2 defective parts. What proportion of lots are rejected by the manager?

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Q: A purchaser of alarm clocks buys them in lots of size 10. It is his policy to inspect 3 clocks…

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Q: In the course of her investigation, Sloan is also interested in whether customers would purchase a…

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Q: In Fall 2013, 10.5 million undergraduate students attended a 4-year institution full-time. Of those,…

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Q: 5. A clinical researcher is conducting a study using an FDA approved medication that helps patients…

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Q: 4. The cost of 12 models of mobile phones at a cellular specialty store during 2009 was as follows:…

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Q: 6.6  The Department of Natural Resources (DNR) received a complaint from recreational fish- ermen…

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Q: 9 out of 15 teachers in a school staff meeting were first year teachers. What percentage of the…

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Q: An article reported the estimated percentage of U.S. households with only wireless phone service (no…

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Q: A quality control marketing manager orders parts and the parts are shipped in lots of sizes 15. When…

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Q: 6 The percentage of sugar in a popular brand of soft drink is given below. 34.2 33.6 33.8 34.7 33.1…

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Q: A study at a college in the west coast reveals that, historically, 45% of the students are minority…

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Q: 7. A study shows that 80% of the population was vaccinated against the Venusian flu but 2% of the…

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Q: 9. If a population is concentrated on the elderly and has very little number of children, then the…

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Q: Human blood is classified by the presence or absence of three main antigens (A, B, and Rh). When a…

A: P(O or Rh+) = P( O U Rh+)  We can Calculate that, P(Rh+)= (35.9+9.5+3.2+37.2)% = 85.8%  = 0.858…

Q: Construct and interpret a 95% confidence interval for the proportion (p) of employees who are…

A: here given,   n = 200 sample mean of no of hour employee spend reading and writing work-related…

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.