1.Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and services on a 7-point scale (7 is the maximum). You are a manager with two consultants you are trying to compare. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. You want to test the claim that the consultant with more experience has the higher mean service rating. So, you collect independent random samples of service ratings for these two financial consultants. Consultant A has 19 surveys with a mean of 4.6 points and standard deviation of 1.2 points. Consultant B has 15 surveys with a mean of 4.1 points and standard deviation of 0.9 points. You wish to test the claim at a significance level of α=0.05α=0.05.
Do a complete hypothesis test and show all work. 

 

2.

An entemologist (a person who studies insects) wanted to know the mean length of a certain species of ant. He captured a random sample and measured the length of each. The raw data (millimeters) is shown below. Use this data to compute a 90% confidence interval for the mean length, and interpret your interval in the context of this situation. Show all your work, 

3.uppose that, using standard treatments, 70% of patients completely recover from a disease. A new treatment is used on a random sample of 800 individuals, and 592 completely recover. Is this evidence, at the 5% level of significance, that this new treatment can improve the recovery rate? Do a complete hypothesis test, and show all work. 

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Status NEW Posted 20 Apr 2017 04:04 AM My Price 9.00

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