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A random sample of 8 cigarette of a certain brand has an average nicotine content of 4.2 milligrams and a standard deviation of 1.4 milligrams. Is this in line with the manufacturer’s claim that the average nicotine content does not ...
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Mathematics 2 months 1 Answer 57 views 0

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According to Harper’s Index, 55% of all federal inmates are serving time for drug dealing. A random sample of 15 federal inmates is selected. (a) What is the probability that 8 or more are ...
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Mathematics richardclark@me.com 2 months 0 Answers 45 views 0

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im having trouble solving my statistics homework and i need help fast.
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Mathematics jtzeller 3 months 0 Answers 63 views 0

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The time taken to assemble a particular item by an average worker follows a normal distribution with a mean time of 41.9 seconds and a standard deviation of 2.1 seconds. a. Sketch the assembly time distribution. Label ...
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Mathematics allygonzalez608 5 months 0 Answers 42 views 0

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Let X1, X2, . . . , Xi , . . . be a sequence of iid continuous random variables with pdf f(x|θ), 0 < x < θ. Prove that the sample maximum X(n) is a consistent estimator of parameter ...
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Mathematics nt2018 7 months 0 Answers 137 views 0

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There are two filling machines operating in a production unit filling syrup In bottles. Two samples each of size 36 filled bottles gave the following data: Which of the two machines is more stable in performance? Machine           Mean content         Standard ...
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Mathematics smohmmad 7 months 0 Answers 136 views 0

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A vessel contains 1.6 g of dioxygen at STP. The gas is now transferred to another vessel at the constant temperature, where pressure becomes half of original pressure. Calculate the volume of new vessel and number of molecules of dioxygen.
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Chemistry Aman Adarsh 1 year 1 Answer 218 views 1

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A is 30% more efficient than B. B works for 12 days, and the remaining work is completed by A alone in 30 days. In how many days will B, working alone, complete half the total work?
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Quantitative Ability Payal Patidar 2 years 1 Answer 295 views 1

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A+B can complete the work in 40% less time than C while B+C can complete the same work in 60%less time than A .If they work together can complete the whole work in 20 days ,then in how many days ...
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SSC & Banking Anjali Gupta 11 months 1 Answer 225 views 1

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Let N be the sum of all the real solution of the equation given below. If N = (a^b -a)/c , where a, b and c are positive integers and a and c are co-prime, then what is the value ...
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Mathematics 11 months 1 Answer 160 views 1

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In an elementary school, it was claimed that Mrs. SMith’s students did substantially better than the rest of the school on a particular exam. The school had an average exam score of 79.23 while Mrs. Smith’s 23 students had an ...
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Data Interpretation jillian.sanders@hardin.kyschools.us 11 months 0 Answers 173 views 1

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A 1.250 g sample of Octane (C8H18) is burned in excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rises from 294.05 K to 300.78 K. If heat capacity of the calorimeter is 8.93 KJ/K. Find the ...
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Chemistry Chandni 11 months 1 Answer 348 views 1

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For the following problems, choose and perform the appropriate statistical test. For your answer, you should provide a null and alternative hypothesis, the statistic you calculated, your comparison and what number you compared it to, the decision this comparison prompted, ...
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Other Need help 1 year 0 Answers 632 views 1

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