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Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than 150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 22 minutes with a standard deviation of 15 minutes. Let a= 0.05. df is 24 sample variance = 225. How do I calculate, step by step the chi square for the given data.
Identify the null hypothesis and alternative hypotheses (you will need to write the null in your own words as this is not provided in most research reports)
it is important that face masks used by firefighters be able to withstand high temperatures because firefighters
Assume there are 18 homes in the Quail Creek area and 8 of them have a security system. Five homes are selected at random: What is the probability all five of the selected homes have a security system?
Because the P-value is ? less greater than the significance level 0.05, there ? is not is sufficient evidence to support the claim that there is a linear correlation between lemon imports and crash fatality rates for a significance level of a = 0..
In this research report you will be analysing a set of data of which can be found in an EXCEL file available for download in the Assessment section of the Blackboard site.
a researcher wants to perform a study to estimate mean body temperature of adults. a pilot study resulted i a mean of
What are the future implications for marketing on the Internet if there are no prospects for the development of international consumer protection rules?
A sample of size 36 results in a sample mean of 7.1. The value of the test statistic is ____
Compare the mean absolute error, root mean square error, and the mean absolute percent of error for all four of these forecasting techniques - what do these statistics tell you about the forecasts? Which one is the best forecast and why?
A woman has n keys, of which one will open her door. (a) if she tries the keys at random, discarding those that do not work, what is the probability that she will open the door one her kth try?
The NAEP test was also given to a sample of 1077 women of ages 21 to 25 years. Their mean quantitative score was 275. Take it as known that the standard deviation of all individual scores is = 60.
You are asked by the owner of the Starshine Motel to develop a customer satisfaction survey to determine the percentage of customers who are dissatisfied with service.
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