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Q1) Serum cholesterol levels in men aged 18-24 are normally distributed with a mean of 178.1 and standard deviation of 40.7. Units are mg/100 mL, and data are based on National Health Survey.
a) If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is greater than 220.
b) If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
Q2) Assume you saw the email which stated that mean age of employees in the company is less than 40 years and that more than 50% of employees are female. You come to a decision to take sample of employees and test claim. Suppose the Cumba database represents random sample of 100 employees. By using "Hypothesis Tests One Sample" file and.05 significance level:
By using gender data only, test whether more than 50% of employees are female.
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
Suppose the probability of the worst-case scenario increases Compute the expected value of perfect information
Assume the researcher's rats can be considered an SRS from the population of all laboratory rats. The mean Math SAT score of these students is found to be 560, 80 points higher than the national average.
Caselet on McDonald’s vs. Burger King - Waiting time
Create a 90% confidence interval for proportion of all kernels that would not pop.
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
Which of the following is the correct set of probabilities for X and if a student is selected at random, the probability he or she is either a Junior or a Senior
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.
Estimate the population mean
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