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Describe the differences between correlations and regressions. Can you describe situations where you would use one of these over the over and why you would do so?
Find the standard error of the mean. Also establish an interval estimate around the sample mean using one standard deviation of the mean.
Conclude that is there a difference in the two amounts?
Each with n = 6 participants. Compute the pooled variance and the estimated standard error for the mean difference. (Use 3 decimal places.)
If the selected coin is flipped twice and comes up heads twice in a row, what is the probability that the coin is two-headed?
What is the effect of child care on the security of attachment which develops between infant and caregiver. You suspect that infants in child care will be insecurely attached at 11 months after being in a child care from 2 months of age,
1) What is the purpose of calculating a test statistic? How does this value describe how the sample data either supports or contradicts a claim?
During the last week of the semester , students at a certain college spends on the average 4.2 hours using the school's computer terminals with a standard deviation of 1.8 hours .for a random sampling of 36 students at that collage.
prediction interval for the regression line.using the age and sick days data from table below find the 98 prediction
Make any necessary corrections to your work based on facilitator's feedback and write: A paragraph describing the dependent variables of interest and children's anxiety as measured by the RCMAS.
Suppose that you're charged with comparing results of standardized tests from four different school districts. What statistical technique would you choose to use?
a poll of 1200 randomly selected students was conducted and found 58 favor decriminalizing all drug use that is
Determine the frequencies expected if the two variables, status regarding lab techniques course and laboratory performance, are independent.
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