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A survey is conducted to verify whether there is a connection between smokers and cardiovascular diseases. 35 over 60 persons with cardiovascular problems are smokers. Can we conclude that the majority of cardiovascular disease are smokers?
a. State the null hypothesis.
b. State the test you will use(one or two tails,Z or t)
c. Decide the level of significance (?r the conclusion level)
d. find the region of non rejection for your variable (or the region of rejection)
e. Find the value of your variable
f. decide if your null hypothesis is rejected or not
g. If we assume the proportion does not change what should be the sample size in order to reject the null hypothesis (in case it were not rejected)?
Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that the mean fuel efficiency rating for midsize cars is greater than the mean fuel efficiency rating for large cars.
For a population with a mean of μ = 60 and a standard deviation of σ = 24, find the Z score corresponding to each of the following samples.
The normal model N (58, 21) describes the distribution of weights of chicken eggs in grams. Suppose that the weight of a randomly selected chicken egg has a z score of 1.78. What is the weight of this egg in grams? Round to the nearest hundredt..
during a national debate on changes to health care a cable news service performs an opinion poll of 470 small-business
What step-by-step methods might make this material easier to learn and internalize? Are the formulas really as terrifying as they might first appear?
Let A and B denote genetic characteristics and suppose that the probability is 1/3 that an individual chosen will exhibit
it is estimated that there are 30 depths for every 10 million people who use airplanes. a company that sells fight
What is the approximate probability that the mean diameter x of the sample of 25 bearings will lie within 0.0001 inch of the population mean diameter of the bearings?
Cconducting in which you would analyze your results using a factorial ANOVA. Use the appropriate notation to describe the ANOVA you would conduct. Write your response in a Microsoft Word documen.
A sample of 4 trucks is randomly selected. What is the probability that 2 of those tested have defective brakes? (Round your answer to 4 decimal places.)
In a sample of 450 students from different countries, we found that the number of students in private school in that sample was 50 students.
Obtain the estimated regression function. Plot the estimated regression function and the data. Does a linear regression function appear to give a good fit here?
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