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The time taken by china HU Company to construct a small bridge is normally distributed with a mean of 400 labour hours and a standard deviation of 100 labour hours. What is the probability that the bridge gets constructed between 350 and 450 hours?
How much should you be willing to pay for this deal? Do you think you would actually pay that much? Why? Expected Value:? Pay it? Why?
Identify the sample and population. Also, determine whether the sample is likely to be representative of the population.
Transportation problem using the stepping stone method
In grading eggs into small, medium and large, Margi farms packs the eggs that weigh more than 4.25 ounces in packages marked " large" and the eggs that weigh less than 2.45 ounces in packages marked " small" the remainder are packed in packages ma..
Whether the suitable analysis would be one-tailed test or two-tailed test. A type I and type II error, given context of hypothesis.
No estimate of the population proportion is available. How large a sample is required?
If a member of this senior class is selected at random, find the probability that the student a) smokes but does not drink alcoholic beverages; b) eats between meals and drinks alcoholic beverages but does not smoke; c) neither smokes nor eats bet..
A researcher desires to estimate the difference in means of two populations. To accomplish this, she takes a random sample of 81 items from the first population.
What is the probability that of the last 100 new juvenile delinquents put on probation, 30 or more will commit another crime?
The mean construction time for a standard two-car garage by Arrowhead Construction Company is 3.5 days. The time for the construction process follows the normal distribution.
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. a) what is the area between 415 pounds and the mean of 400 pounds?
The sample reveals a mean of 17 contacts and a variance of 9. Does the evidence contradict the vice-president's claim? Use a = 0.50.
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