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For the following two questions, please, determine the correct hypothesis test, state the null and research hypotheses in words and in symbols, then conduct the hypothesis test, and report the results in writing.
1. A researcher compares two diabetes medications (drug A and drug B) concerning their ability to lower blood sugar within 2 weeks of taking the drug. He enlists 200 diabetic patients and assigns them to two groups (group A and group B), each of 100 participant. Each group is instructed to take the relevant drug regularly for 2 weeks. Measurement of blood glucose before and after two weeks of regular intake of the drugs shows lowering of the blood sugar in 67 patients in group A (taking drug A), and in 72 patients in group B (taking drug B). Does the data indicate a significant difference between the two drugs? Test at the α = 0.05 level.
2. In the previous study, the reduction in mean blood glucose level for the 100 participants in group A (taking drug A) was calculated resulting in a sample's mean of differences of 32.3 mg/dL, and a standard deviation of 10.7 mg/dL. Is there a significant reduction in mean blood glucose level in the patients after using the drug for 2 weeks? Test at the α = 0.05 level.
What kind of design did the researchers use?- Write appropriate hypotheses.- Are the assumptions and conditions necessary for inference satisfied?
Over the past 50 days, the distribution of the number of successful calls made by the assistant is as shown below.- Using the 0.05 level of significance, test the goodness of fit between these data and a Poisson distribution with λ = 1.4.
Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.
use the frequency distribution table to construct a probability distribution. 12- the number of hits per name played by
customers arrive at a thrift bank according to a poisson distribution with a mean of 45 customers per hour.
in a study of the effectiveness of garlic for lowering cholesterol 17 subjects were treated with garlicin which is
a tour operator believes that the model px 40x - .25x2 can be used to predict his profit px for selling x tickets.
Sweetness of orange juice. The quality of the orange juice produced by a manufacturer (e.g., Minute Maid, Tropicana) is constantly monitored.
to test the efficacy of a new cholesterol-lowering medication 10 people are selected at random. each has their ldl
Develop the opportunitiy loss table and compute the expected opportunity loss for each product. Determine how much the firm would be willing to pay to a market research firm to gain better information about future market conditions.
If a worker is known to strongly agree with the statementMy current job brings out the most creative ideas" what is the probability that the worker is engaged?
If the acceptance rate is only 2% or less, the campaign won't be worth the expense. Given the confidence interval you found, what would you say?
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