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BMI in children is roughtl normally distributed with the mean of 24.5 and standard deviation of 6.2.
a) BMI between 25 and 30 is considered overweight. Determine proportion of children are overweight?b) BMI of 30 or more is considered obese. Determine proportion of children are obese?c) In the random sample of 10 children, determine the probability that their mean BMI exceeds 25?
In which of the following situations is bootstrapping (and other resampling methods) often used and Which of the following is a valid description of the bootstrapping method.
Suppose a research firm conducted a study to determine the average amount of money steady smokers spend on cigarettes during a week.
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
Find out the variance for percentage of tickets? Determine the probability that your sample will have the average between 70 and 75?
What is the probability that the kickoff will go between 60 and 75 yards if the average kickoff is 50 yards with a variance of 49?
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
Can you provide another explanation for this one: Zc/Tc for 86% confidence interval when the sample size 50?
Explain the importance of random sampling. What problems/limitations could prevent a truly random sampling and how can they be prevented?
The smallest defect in a computer chip will render the entire chip worthless. Therefore, tight quality control measures must be established to monitor the chips.
What is the 95% confidence interval for the true mean length of the bolt?
Determine regression line for predicting January temperature from latitude.
Suppose two-tailed test, state hypotheses (Ho and H1 ) for two-tailed test. Using symbols, define hypotheses (Ho and H1) for two-tailed test.
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