Use Bayes' rule to find the indicated probability.Two stores sell a certain product. Store A has 39% of the sales, 2% of which are of defective items, and store B has 61% of the sales, 4% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.8133
B. 0.2438
C. 0.26
D. 0.7625
Answer: D
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Find the indicated decile or percentile.The test scores of 19 students are listed below. Find the ninth decile, D9 .
A. 89 B. 98 C. 93 D. 45
Solve the problem.A satellite dish is shaped like a parabola. The signals that are received by the dish strike the surface of the dish and are reflected to a single point, where the receiver of the dish is located. If the dish is 14 feet across at its opening and 6.1 feet deep at its center, at what position should the receiver be placed?
A. 0.1 feet from the base along the axis of symmetry B. 24.5 feet from the base along the axis of symmetry C. 12.3 feet from the base along the axis of symmetry D. 2 feet from the base along the axis of symmetry
Use the graph to determine the function's domain and range. Write the domain and range in interval notation.
A. domain: [0, ?) range: [3, ?) B. domain: [0, ?) range: [0, ?) C. domain: [0, ?) range: (-?, ?) D. domain: (-?, ?) range: [3, ?)
Write as a percent. Round your answer to the nearest tenth, if necessary.
A. 24.7% B. 2.2% C. 22.2% D. 90%