Find a 90% confidence for the mean reduction in systolic blood pressure.

A group of five individuals with high blood pressure were given a new drug that was designed to lower blood pressure. Systolic blood pressure (in mmHg) was measured before and after treatment for each individual, with the following results:




The differences are: 25, 32, 39, 23, 38.

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Which of the following may cause exposure to harmful microorganisms?

A. Circulating cooling water through a heat exchanger with ruptured tubes B. Improper cooling tower lineup C. Failure to treat cooling water chemically D. Improper chemical addition to the cooling tower

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Why is it important to use correct mechanics and proper tone when composing a

business letter?

What will be an ideal response?

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Explain the term “chewing the cud.”

What will be an ideal response?

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The decimal equivalent of the 2's complement signed number 1000 is ________

Fill in the blank(s) with correct word

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