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Waiting times to receive food after placing an order at the local Subway sandwich shop follow an exponential distribution with a mean of 56 seconds. Calculate the probability a customer waits:
(a) Less than 33 seconds. (Round your answer to 4 decimal places.)
(b) More than 120 seconds.
a sample of 97 observations indicated that x1 is 87. a second sample of 153 observations indicated that x2 is 117.
Describe a hypothesis upon which the manufacturer might wish to conduct a test concerning the relative effectiveness of the new fertilizer.
The consequences of the central limit theorem is that if we end up averaging the measurements of a particular quantity, the distribution of an average tends on going toward a normal one?
An element E has a constant failure rate (lamda) and a reliability at time t of R(t)=p, if p=0.2 and 0.8, What is the effect on Rs(t), and basic reliability, serial MTBF, of adding additional elements to the series baseline system containing a sin..
What is the conditional probability that a student likes gospel music if we know that he or she likes country music and what is the conditional probability that a student who does not like country music likes gospel music?
The mean diastolic blood pressure for random sample of 90 people was 92 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury
What do the results suggest? How might you use this data from this sample size to develop a smoking cessation program at your workplace?
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.
Can I get some help for me to understand what is the difference between an equation and an expression? Can you solve for a variable in an expression? Could you explain.
If the store orders three copies of the magazine, what is the mean value of the profit? (Profit = Revenue - Cost). If the store orders four copies of the magazine, is it better to order four than three copies of the magazine. Explain.
In order that the sample proportion and the population proportion not differ by more than 0.05 with 95% level of confidence, what sample size should be used?
Prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. In order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket. Identify..
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