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Infer that the difference in the level of satisfaction with service between the two branches.
A bank is comparing the quality of service given by its two most important branches. In branch A, 192 out of a random selection of 300 of its customers said that they were satisfied with the service. In branch B, 138 out of 250 randomly selected customers said that they were satisfied with the service.
At the 5% level of significance, can we infer that the difference in the level of satisfaction with service between the two branches is wider than 5 p.c. points?
What is the approximate estimated bootstrap standard error of the median, What is the approximate bias of the median estimated from bootstrapping - What is the bootstrap t confidence interval for the median
The American Automobile Association checks the prices of gasoline before many holiday weekends.
The following study was developed by Economist Simon Fass. Fass surveyed a sample population of low-income households in St. Martin. The variables analyzed were monthly income per adult and choice of rental contract for housing.
Compute the mean, standard deviation, median, and standard error for each group.
Make up a scatter diagram with 10 dots for each of the following situations:
Would you use a one-tailed or two-tailed test? Explain your response.
Mean and standard deviation are 584.6 and 34.28
Data on distribution of cost for building effort, design work and testing effort.
Select a random variable to represent the category. Produce a probability mass function for that variable, and use it to compute the mean, the median and the variance of the data in the data set. Show the probability mass function, both in tabular..
Do the data indicate that the sleeping pill is effective at a 1% level of significance?
What can we conclude from this summary, Which of the following statements is correct and In which of the following situations would permutation tests be suitable
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
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