Biology

Biology, 01.10.2019 23:50, bomniekay

Design an experiment to test whether using soap or bleach is the better way to clean boots to prevent bd contamination. remember to include a control when designing your experiment. ((i need a hypothesis, independent and dependent variables, and a procedure))

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Mathematics, 24.06.2019 18:00, jay1041

An investigation of the effectiveness of an antibacterial soap in reducing operating room contamination resulted in the accompanying table. the new soap was tested in a sample of eight operating rooms in the greater seattle area during the last year. the following table reports the contamination levels before and after the use of the soap for each operating room. operating room a b c d e f g h before 6.6 6.5 9.0 10.3 11.2 8.1 6.3 11.6 after 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2.0 1. state the decision rule for 0.05 significance level: h0: ? d ? 0; h1: ? d> 0. (round your answer to 3 decimal places.) reject h0 if t > 2. compute the value of the test statistic. (round your answer to 2 decimal places.) value of the test 3. at the 0.05 significance level, can we conclude the contamination measurements are lower after use of the new soap? 't reject/reject) /lower)after use of the new soap.

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Biology, 03.09.2019 02:20, mimas76

1) why did pasteur include the broth flask with the straight neck in his experiment? 2) if you were to design an experiment to test whether bacteria can be transported by air, what steps could you include in your experiment?

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Mathematics, 18.10.2019 01:00, jordanjones022

2. a manufacturer of boots plans to conduct an experiment to compare a new method of waterproofing to the current method. the appearance of the boots is not changed by either method. the company recruits 100 volunteers in seattle, where it rains frequently, to wear the boots as they normally would for 6 months. at the end of the 6 months, the boots will be returned to the company to be evaluated for water damage. (a) describe a design for this experiment that uses the 100 volunteers. include a few sentences on how it would be implemented. (b) could your design be double blind? explain.

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Mathematics, 07.11.2019 06:31, heids17043

2. a manufacturer of boots plans to conduct an experiment to compare a new method of waterproofing to the current method. the appearance of the boots is not changed by either method. the company recruits 100 volunteers in seattle, where it rains frequently, to wear the boots as they normally would for 6 months. at the end of the 6 months, the boots will be returned to the company to be evaluated for water damage. (a) describe a design for this experiment that uses the 100 volunteers. include a few sentences on how it would be implemented. (b) could your design be double blind? explain.

Answers: 3

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