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More on the Normal curve and the P-value. A test statistic for a two-sided significance test for a population proportion is z = 2.42.
Sketch a standard Normal curve and mark this value of z on it. Find the P-value and shade the appropriate areas under the curve to illustrate your calculations.
the student government association at southwestern state university wanted to demonstrate the relationship between the
the sample variance 1.8 hours. If μ= 3.0, then calculate the observed value for the t-statistic. Construct 90% confidence interval for the mean.
You then sort by random numbers in ascending order. Finally, you take the first 50 sorted employees as your sample. Does this approach constitute a statistical or a nonstatistical sample?
1. For each of the following functions decide whether or not the function is a linear transformation. Prove your answer in each case :
The experiment data in below table was to evaluate the effects of three variables on invoice errors for a company. Invoice errors had been a major contributor to lengthening the time that customers took to pay their invoices and increasing the acc..
For the schedules of reinforcement data, make all possible pairwise comparisons and write a conclusion about reinforcement schedules and persistence.
The Oregon health & science university's news website gives information on a study that found that some commercial cigarette brands contain 10 to 20 times higher percentages of nicotine in the "free-base" form, that is, the form thought to be ..
Four components of a time series are secular trend, cyclical variation, seasonal variation, and irregular variation (Lind, 2005). Briefly describe each of these components and provide a real-world example of one component.
Assume you have noted the following prices for paperback books and the number of pages that each book contains.
giving a test to a group of students the grades and gender are summarized
Social support is the perception that individuals within the social network are cared for and have assistance from other individuals. Within a social network there are several supportive resources to help address a communal or individual need.
Calculate the percentage with at least five ear piercings for women who have a tattoo and separately for women who don't have a tattoo.
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