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In an attempt to minimize no-shows on high-demand days a golf course has implemented an online check-in procedure. Preliminary results indicate that once a golfer has checked in, there is only at 20% chance that he or she will be a no-show. This chance of being a no-show can be modeled using the binomial distribution.
If 15 golfers have checked in using this process, what is the probability there will be exactly 4 no-shows among them? (Use the formula, show work)
If 15 golfers have checked in using this process, what is the probability there will be at least 4 no-shows among them? (Use calculator, write down the command - all details)
If 15 golfers have checked in using this process, what is the expected number and standard deviation of no-shows among these golfers? (Show computations)
(a) State the hypothesis for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances. Interpret these results. (c) Is the difference in mean scores large enough to be important?
The nation health department has concerns with the chlorine level of 0.4% mg/mL at a local water park raises to unsafe level.
Which combination of factors has greatest likelihood of rejecting null hypothesis?
Calculate the mean number and median number of apples in a bag.
A manufacturer of automobile transmissions uses three different processes. The management ordered a study of the production costs to see if there is a difference among the three processes. A summary of the findings is shown below.
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
The administration at the university of Georgia is interested in determining if a parking problem exists for their students. The administration selects a randome sample of 200 students and asks them to estimate the amount of time it took the stude..
Event A occurs with probability 0.2. Event B occurs with probability 0.3. Event C occurs with probability 0.4. If A, B, and C are disjoint, then
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
This model is fit to the data using the method of least squares using statistical software, and the following parameter estimates and their standard errors are obtained.
An educational study utilizes a simple pre post design to assess the efficacy of a computer tutor for solving inequalities.
How large a sample size will need to be selected if we wish to have a 99% confidence interval with a margin for error of .25 hours?
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