Mathematics, 24.01.2021 01:00, layla07
A new drug to control blood pressure was given to 1,000 patients. Another 1,000 patients were given a placebo. The result showed that 750 of the patients receiving the new drug had a decrease in blood pressure. For the group that received the placebo, 228 had a decrease in blood pressure. The results are shown in the following Venn diagram.
A diagram is composed of two overlapping circles contained in the interior of a rectangle. The leftmost circle is labeled "Received new drug" and the rightmost circle is labeled "Reduced blood pressure". Numbers are given in different regions. They are listed as follows:
"Received new drug" only: 250
"Reduced blood pressure" only: 228
"Received new drug" overlapping with "Reduced blood pressure": 750
Region in the rectangle outside both circles: 772
QUESTION: How many false negatives occurred?
Answers: 1
Mathematics, 21.06.2019 20:00, CelesteN64
For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.
Answers: 1
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