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Having problem with working through hypothesis process in real world examples.
* Hypothesis testing process is a series of steps to evaluate a process to see if assumptions are correct. What are the major benefits of the process and what are the weakness of the process?
* The null hypothesis or HO has unique characteristics such as (a) assumes status quo (b) assumes no difference (c) always contains an implied equal.What would be an example in the average work world for HO and H1?
* Using P-values for hypothesis testing they are intuitively easy and dont require critical values in charts. In real world terms, what is the best way to describe how P-values work and how to explain this to someone?
Given that P (A) = 0.7, P (B) = 0.5, and P (A B) = 0.8. Find the following probabilities:
A random sample of 60 days shows that the mean daily number of gallons sold is 10.00. What is the point estimate of the population mean?
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
Is there evidence that population mean amount is different form 8.17 ounces? (Use a 0.05 level of significance.) with sample standard deviation of 0.051 ounce.
What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one- or two-tailed.
In 1,000 samples, assuming that H 0 is true, how many times would you expect to commit Type I error if:
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
Simulate the arrival of cars at the service station for 20 arrivals and compute the average time between stations and Simulate the arrival of the cars at the service station for 1 hour
Dr. Justin Case wants to explore whether or not students perform better if they cram for a test (massed practice) or if they space their studying over weeks (distributed practice).
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
The technician has just made an attempt to calibrate the machine. a. What is the probability that the machine is in adjustment?
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