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Four coins were tossed 160 times and 0, 1, 2, 3, or 4 heads showed, respectively, 19, 54, 58, 23, and 6 times. Use the 0.05 level of significance to test whether it is reasonable to suppose that the coins are balanced and randomly tossed.
Produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.
Assume that one of the subjects is randomly selected. What is the probability that the selected person refused to respond or is over 59 years of age?
suppose that the probability that a child living in an urban area is the us is obese is 20. a social worker sees 15
Calculate the correlation coefficient and test for significance and calculate the Pearson product-moment correlation coefficient and test for significance
Assume that you are the owner of CDA Elevators a Large Regional Elevator Company that constructs and repairs elevators for new and existing construction. Assume further that you are trying to decide if you want to extend your business by adding an..
samples of the members of five different labor unions were asked whether they are for or against a certain piece of
The purpose of the Final Exam is to assess your understanding of the main statistical concepts covered in this course and to evaluate your ability to critically review a quantitative research article.
1. classify the following variable as nominal ordinal discrete or continuous and state why it is such a variable
Draw the appropriate conclusions with respect to female and male human resource manager salary levels. Calculate the t value for independent groups for the following data.
what do we mean when we say that a statistical result is significant? what is the difference between a statistically
First- and second-place trophies are awarded to the two persons receiving the highest and second-highest number of votes. In how many different ways can the trophies be awarded?
A local computer sales office sent the following information about the computer system installation. Identify the critical path by computing the ET, LT, TS and FS values.
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