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Question: Damage to homes caused by burst piping can be expensive to repair. By the time the leak is discovered, hundreds of gallons of water may have already flooded the home. Automatic shutoff valves can prevent extensive water damage from plumbing failures. The valves contain sensors that cut off water flow in the event of a leak, thereby preventing flooding. One important characteristic is the time (in milliseconds) required for the sensor to detect the water flow. The data obtained for four different shutoff valves are contained in the file titled Water flow. The differences between the observed time for the sensor to detect the water flow and the predicted time (termed residuals) are listed and are assumed to be normally distributed. Using the four sets of residuals given in the data file, determine if the residuals have a normal distribution. Use a chi-square goodness-of-fit test and a significance level of 0.05. Use five groups of equal width to conduct the test.
the weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25
Insurance companies collect annual payments from homeowners in exchange for paying to re- build houses that burn down.
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed,
1. How does the presentation of the general information about EndRun in this guide affect your perception of the business?
During a specific hour of operation, = 23.7 inches. Should the assembly line be shut down? Use a = 0.05. b. Using a 5 0.05, find the critical values in the x world.
how do you know when to use the minimization and maximization lp
Describe the scale of measurement of Income
you are a manager of a 7-eleven. you have determined the probability a customer buys gasoline 0.32. you have also
A feedback control system is shown in Figure P8.8.The specification for the closed-loop system requires that the overshoot to a step input be less than 15%. (a) Determine the corresponding specification Mpω) in the frequency domain for the closed-..
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
There is significant evidence, alpha =0.05, to show that there is a difference in the proportions of patients who show improvement between treatments 1 and 2
A coin is tossed100 times. Estimate the probability that the number of heads lies between 40 and 60. NB: use the Central Limit Theorem.
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