Two randomly assigned groups are compared in a health pilot evaluation project. Data drawn on both...

Two randomly assigned groups are compared in a health pilot evaluation project. Data drawn on both groups are assumed to be normally distributed. The mean for group 1 is 280, with a standard deviation of 15. The mean for group 2 is 230, with a standard deviation of 8. The number of observations for each group is 45. Assume the level of significance is 5 %. Determine whether these two groups are statistically similar. Show your hypotheses, calculated and critical t-values, decision and conclusion.

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orchestra answered 2 years ago

two randomly assigned groups are compared in a health pilot evaluation project. data down on both...

two randomly assigned groups are compared in a health pilot evaluation project. data down on both groups are assumed to be normally distributed. the mean for the group 1 is 280, with a standard deviation of 15. the mean for group 2 is 230, with a standard deviation of 8. the number of observation for each group is 45. assume the level of significance is 5%. determine whether these two groups are statistically similar. show your hypothesis, calculated and critical...

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In a clinical trial, 401,974 adults were randomly assigned to two groups. The treatment group consisted...

In a clinical trial, 401,974 adults were randomly assigned to two groups. The treatment group consisted of 201,229 adults given a vaccine and the other 200,745 adults were given a placebo. Among the adults in the treatment group, 33 adults developed the disease and among the placebo group, 115 adults developed the disease. The doctors' claim that the rate for the group receiving the vaccine is less than the group receiving the placebo. Answer the following questions: a. If w...

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