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Use the following description and table to answer the questions.A pharmaceutical company wants to determine if there is a significant reduction in heart rate with their new drug, Clardozan, at the .01 level of significance. The researchers took a random sample of 30 adults and randomly selected each to receive either Clardozan or the placebo. Heart rates for each subject and treatment group are presented below; assume data are normally distributed with equal variances. Subject Clardozan Heart Rate Subject Placebo Heart Rate 1 81 2 78 4 60 3 88 7 91 5 63 8 103 6 56 10 85 9 70 13 88 11 77 14 84 12 64 16 60 15 48 17 60 18 51 19 72 20 52 23 96 21 76 24 75 22 80 26 58 25 51 29 70 27 66 30 81 28 55 1. What is the independent variable? What is the dependent variable? Why?
2. What is the null hypothesis? What is the alternative hypothesis? Is this a one-tailed or a two-tailed test?
3. What test statistic will you use? Why?
4. What is the critical value? What is the value of the test statistic?
5. Would you accept or reject the null hypothesis? Explain your conclusion in a 100 to 150 word summary.
there is a class of 50 people answering a question each student has a 60 chance of getting the correct answer. let x
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there is a certain disease in america which is very rare. the probability of a person having the disease is 1 in
Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course:
Suppose that the number of calories in McDonald's Egg McMuffin is normally distributed random variable with mean of 290 calories and standard deviation of 14 calories.
A random sample of 36 drinks from a soft drink machine has an average content 7.6 ounces with an standard deviation of 0.48 ounces. Test the hypothesis ounces against the alternative hypothesis at the 0.05 level of significance.
a study was performed to investigate the relationship betwee family income and ownership of a luxury car. 16 households
The simple random sample is n = 14, σ = 12.5 and the original population is normally distributed.
Choose one of these tests and describe in your own words, the purpose of the test, any particular assumptions or limitations pertaining to the test, and provide an example where you could employ the test.
consider the following. give your answers correct to two decimal places.a determine the value of the confidence
Determine the likelihood of accepting a lot which is 1% defective?
the quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes
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