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Education and Child Development Some people claim children who practice yoga are more physically fit, self-confident, and self-aware. A random sample of pre-teens (ages 10-12) practicing yoga was obtained and their meditation (or quiet breathing) times (in minutes) per day were recorded. Use the four methods presented in this section to determine whether there is any evidence to suggest the data are from a non-normal population.
If we assume a normal distribution and a standard deviation of σ = $0.20. , what proportion of passenger trips produced a revenue of less than $1.05?
Does the sample provide sufficient evidence that the mean pH level in the water differs from 8.5? Conduct a test at the ? = .01 level. What are the upper and lower limits of the 95% confidence intervals?
The odds ratio between treatments (A, B) and outcome (death, survival) equals 2.0. What do you think about the following interpretation: "The probability of death with treatment A is twice that with treatment B". If you think, the above interpreta..
you conducted a t-test in your research. you did not find a statistically significant difference between your groups
A reasearcher is running a chi-sq test. She would like to test her hypothesis at the alpha=.05 and finds that her research situation has 5 degrees of freedom. What is value for the chi-sq critical?
Develop the correlation matrix that includes all independent variables and the dependent variable. Predict the order that the variables will be selected.
A large corporation has 4520 male and 567 female employees. The organization's equal employment opportunity officer wants to poll the opinions of a random.
Find a 95% confidence interval for the slope of the true relationship. Comment on the assumptions for inference
Create, using SPSS, a frequency distribution and an appropriate graphical display for your variable given its level of measurement.
Describe the difference in the fit provided by the two estimated regression equations.
Impact of the Credit Crisis on MNC Value Much of the attention to the credit crisis was focused on its adverse effects on financial institutions. Yet, many other types of firms were affected as well.
The customers arriving between 0 and 1 have to wait until the store opens. Suppose X is the total times that these customers have to wait. Calculate Var(x).
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