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In estimating the cost of a pile of bricks measured as 2m*15m*1.2m,the tape is stretched 1% beyong the standard length if the count is 450 bricks to 1m^3 and bricks cost $100 per 1000, find the approximate error in the cost.
Compute the cofficient of determination. Compute the correlation coefficient between the price and the number of pages.
Determine whether the sampling method is independent or dependent for the following example. A researcher wants to know whether the newly issued "state" quarters have a mean weight that is different from "traditional" quarters.
Can researcher conclude that humidity has significant effect on eating behavior? Use a two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
in this assignment you will reflect on decisions you made using social influence persuasion and risk taking that went
jenco tracks their daily profits and has found that the distribution of profits is approximately normal with a mean of
Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.
the productivity of a factory has been recorded over 10 months together with forecasts made the previous month by the
the measurements of weight of 100 units of a product manufactured by two parallel processes have same mean but the
Illustrate what can we say about the probability distribution. Is it approximately normal, elucidate the mean and standard deviation.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Identify whether it is an experiment or an observation study/survey. If experiment: identify experimental design, experimental units, factors & levels, response variable, and blocks (if any).
Does all statistical data have a mean, median, or mode? Why? When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
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