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Given the following situation, how would you use Megastat to answer this question.
Question 1:
The percentage of students in private school is about 11%.
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.
find the percentage of private school students with 95% confidence ?
What is the relation between this percentage with the 11%?
Can the researcher conclude that humidity has a significant effect on eating behavior? Use a two-tailed test with α=.05. Compute the estimated d and r2 to measure the size of the treatment effect.
A relation R is defined on the set Z of all integers. In each case, prove that R is an equivalence relation. Find the distinct equivalence classes of R and list at least four members of each.
Find the optimal order quantity and what is the optimal total ordering cost per year vs. what is that cost with the current policy?
An analysis of variance was used to evaluate the mean differences from a repeated-measures research study. The results were reported as F(3,24)=6.40.
What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
An engine system consists of three main components in a series, all having the same reliability.
Suppose that we are interested in the proportion of the 70 students in the lunchroom cafeteria that smokes. Is the normal approximation for the proportion p = r/n valid?
Also, assume that X = number among 20 randomly selected coffee purchasers who select a national brand, and that the random variable X follows the binomial distribution.a. What is the probably that at most 15 customers choose a national brand?
Many people believe that abnormal behavior is more likely to occur during a full moon. As a test for empirical evidence to support this belief, a study was conducted based on admission of new clients over a one year period by lunar phases:
Assume that z is the test statistic and calculate the value of z∗ for testing the null hypothesis
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
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