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To determine whether extra personnel are needed for the day, the owners of a water adventure park would like to find a model that would allow them to predict the day's attendance each morning before opening based on the day of the week and weather conditions. The model is of the form
a. Interpret the estimated model coefficients.
b. Is there sufficient evidence to conclude that this model is useful tor the prediction of daily attendance? Use a = .05.
c. Is there sufficient evidence to conclude that the mean attendance increases on weekends? Use CY = .10.
d. Use the model to predict the attendance on a sunny weekday with a predicted high temperature of 95°F.
e. Suppose the 90% prediction interval for part d is (645,1,245). Interpret this interval
Construct a 95% confidence interval estimate of the difference in kilometers per liter. Do the results of parts (a) and (b) agree? Explain why or why not.
the thickness of eight pads designed for use in aircraft engine mounts are measured.the measurements are 41.83 42.68
The instructor wanted to "pass" anyone who scored above 69. What proportion of exams will have passing scores?
Let the ordered sample observations be denoted by being the smallest and yn the largest). Our suggested check for normality is to plot the pairs. Suppose we believe that the observations come from a distribution with mean 0, and let w1,..., wn b..
Produce trucks arrive at the weigh station at the California border at a rate of 3 per hour according to a Poisson distribution. Livestock trucks arrive at that same weigh station at a rate of 2 per hour according to a Poisson distribution.
1. distinguish between classification and tabulation of data. what are the types of classification of data?2. calculate
State the hypotheses for a right-tailed test.
(Data set CSE8.xlsx can be found on the book's online platform.) Determine the mean, mode and a five figure summary of the data. What do these descriptive statistics tell you about the distribution of the data?
For the telephone switch of Example 10.28, we can estimate the expected number of calls in the system, E[M(t)], after T minutes using the time average estimate
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10 percent of the cases. If three patients are scheduled for surgery today and are to be administered this anesthetic, compute the probability that:
The bank wants to find out the waiting time of their customers during the Friday evening hours from 5pm to 8pm. Using the data in ungrouped form, compute the Standard Deviation, using the computational formula.
a farmer believes that the yields of his tomato plaints have a normal distribution with an average yield of 11 lbs and
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