Although, there is a population belief that herbal remedies such as ginko biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well controlled research. In a typical study a researcher obtains a sample of n=16 participants and has each person take the herbal supplements every day for 90 days., Each person takes a standardized memory test. For the general population scores from the test form a normal distribution with mean of u= 50 and standard deviation sigma =12. The sample of research participants had an average of M = 54. a) Assuming a two tailed test state the null hypothesis in a sentence that includes the two variables being examined. b) Using the standard 4-step procedure, conduct a two tailed test with (x = 0.05 to evaluate the effect of the supplement.
Although, there is a population belief that herbal remedies such as ginko biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well controlled research. In a typical study a researcher obtains a sample of n=16 participants and has each person take the herbal supplements every day for 90 days., Each person takes a standardized memory test. For the general population scores from the test form a
a) Assuming a two tailed test state the null hypothesis in a sentence that includes the two variables being examined.
b) Using the standard 4-step procedure, conduct a two tailed test with (x = 0.05 to evaluate the effect of the supplement.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
