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A highway department has enough salt to handle a total of 80 inches of snow- fall. Suppose the daily amount of snow has a mean of 1.5 inches and a standard deviation of .3 inches.
(a) Approximate the probability that the salt on hand will suffice for the next 50 days.
(b) What assumption did you make in solving part (a)?
(c) Do you think this assumption is justified? Explain briefly.
given a 90 confidence interval for mu1-mu2 as -55. what can be concluded?a nothingb mu1mu2c mu1 -5 or 5 and mu2 10 or
The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is taken. The average age in the sample was 22.5 years with a standard deviation of 5 years.
a local board of education conducted a survey of residents in the community concerning a property tax levy on the
what is the importance of a 5 significance level? why would you choose 5 as opposed to 10 or 1? what effect does the
1.an experiment was performed to investigate lifetime of a component exposed to high heat. three different oven types
which statement is true about the scope of systematic reviews srs?a. srs should be as broad as possibleb. srs should be
students who have completed a speed reading course have reading speeds that are normally distributed with a mean of 950
A building contractor pays $500 to bid on a contract. If he gets the contract, the probability of which he estimates to be 0.70, he will make a profit of $50,000.
As of 2012, the proportion of students who use a MacBook as their primary computer is 0.36. You believe that at your university the proportion is actually greater than 0.36. If you conduct a hypothesis test, what will the null and alternative hypo..
a las vegas roulette wheel contains 38 numbers 1-36 plus 0 and 00. the numbers 0 and 00 are colored green. the odd
the final score of games of a certain spot were compared against the final point spreads established by oddsmakers. the
The largest salary on the list is $100,000 and is accidentally changed to $1,000,000. What is the new standard deviation?
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