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In a random sample of 400 employees of a local company, 180 were female.
a. At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
b. At 95% confidence using the p-value approach, test to determine if the proportion of females in the company is significantly less than 50%.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
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Which of the following is NOT true regarding the normal probability distribution.
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If there are 500 students in the school, what is the probability that everyone will pass the exam
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What nonparameiric test can be used to distinguish total heart weight of males with left-heart disease with that of normal males? Write and Implement test and report a p-value.
Is it reasonable to conclude that this set of n = 16 people is not a representative random sample of registered voters?
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
Develop the estimated regression line. Jensen expects to use the machine 30 hours per week, develop a 95% prediction interval for the company's annual maintenance expense.
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