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Selecting appropriate sampling technique for the given study.
Write a brief essay (suggested length of 2 pages) in which you:
Question 1: Explain why random samples are preferred to nonrandom samples.
Question 2: Describe the advantages and limitations of the following commonly used sampling techniques:
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
For the data shown below, prepare a x-bar chart. Note that the sample size is three. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control.
Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
What is the chance that stock will fall by more than 15% next month? What extra assumption are you making when replying this question?
Write introduction to STATISTICAL PROCESS CONTROL and Explain the use of SPC tools used at D2D
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed.
We want to know if his support has decreased. In computing a test of hypothesis with , what is the estimate of the overall proportion?
A permutation resample for a two-sample test
Consider the following stemplot. The mean of the data represented in this stemplot ?
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
Basic Statistics problem
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