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Suppose that you must establish regulations concerning the maximum number of people who can occupy an elevator. A study indicates that if eight people occupy the elevator, the probability distribution of the total weight of eight people is approxiamately normally distributed with a mean equal to 1200 pounds and a standard deviation of 99 pounds. What is the probability thyat the total weight of eight people exceeds 1300 pounds? 1500 pounds?
He can award a bonus to 20 percent of the representatives. What is the cutoff point between those who earn a bonus and those who do not?
Mean waiting time was 15 minutes and that the standard deviation was 4 minutes. The 95% confidence interval for the population mean of waiting times is?
On what method is the Excel based calculator that you have provided based on (Exact, Score, Wald, Adjusted Wald). Also, what method is the calculation in Minitab based on?
The answer was finding the length and width of a rectangle. The results were x= 3 and x= -4. Neither the length or width can be a negative number. However, 3 did work in the original equation."
Suppose that the thermometer readings are normally distributed with mean of 0° C and a standard deviation of 1.00° C. A thermometer is randomly selected and tested.
Scientific poll based on 400 hospital patients has just been performed. Determine the probability that at least 70 patients will not be satisfied with after-surgery care?
Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. Complete an ANOVA table. State your decision regarding the null hypothesis.
At a 5% level of significance, is there sufficient evidence that the population mean waiting time is now less than 3.7 minutes?
Task is exponentially distributed with a mean of 8 minutes. What is the probability that it will take a worker less than 4 minutes to complete the task (to 4 decimals)?
A prestigious university requires a score of at least 750 on a graduate exam for admission to its MBA program. Suppose the graduate exam is normally distributed with a mean of 500 and a standard deviation of 200.
Give an example of how to use a t-test to analyze the data from the Table of Variables and list the grouping variable and continuous variable that you would include in the analysis
What percent of the time will a fully charged battery last at least 330 minutes. What is the probability that a random sample of n = 15 batteries results in a mean talk time of at least 330 minutes?
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