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1. Body Mass Index (BMI) is a number calculated from a person's weight and height and is calculated by the formula: weight (kg) / [height (m)]2. Though somewhat controversial and not meant to be used as a diagnostic criteria, it can be used to characterize body type and (with caution) fitness and health using readily available data. Commonly accepted classifications are listed below:
Based on a study, the BMI for middle-aged US males has a normal distribution with a mean of 27.5 and a standard deviation of 6.5. What is the probability that the average BMI for a randomly selected sample including 36 middle-aged US male is considered underweight based on BMI criteria?
2. Another study is conducted to estimate the average BMI for middle-age US females. The study includes a random sample of 18 middle-age US females with a sample mean of 22.7 and a sample standard deviation of 6.2.
Strategic placement of lobster traps is one of the keys for a successful lobster fisherman. An observational study of teams fishing for the red spiny lobster in Baja California Sur, Mexico, was conducted and the results published in Bulletin of Marin..
Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesse..
Develop an ordered array and plot a percentage histogram, what conclusions can you reach about the differences in the state cigarette tax between the states?
A clinical trial is conducted comparing a new pain medication for arthritis. Participants are randomly assigned to receive the new medication or a placebo. The outcome is pain relief within 30 minutes.
an experiment is conducted in which 60 participants each fill out a personality test but not according to the way they
A dean of college of business in the Midwest claims
use only hand calculators on this exam minitab or any other computer software is not allowed. the textbook but no
Based on the information provided for this hypothesis test, what decision should you come to? (Assume that the population is normally distributed.)
Examine pairs of variables, using the method of linear regression, to determine if there is any correlation between the variables. Afterwards, you will postulate whether this correlation reveals a causal relationship.
Many organizations are doing surveys to determine the satisfaction of their customers. Attitudes toward various aspects of campus life were the subject of one such study conducted at Purdue University.
Approximately 20% of 1000 fish in a pond are affected with a skin disease. A random sample of 20 fish are selected. What is the mean of the sampling distribution for the proportion of your sample that is infected? What is the standard deviation of..
We frequently come across survey results like this during an election cycle: The survey indicated that one candidate will get 52% of the vote while his opponent will get 48%. The result has a sampling error of 3%. Given the above data what do you thi..
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