Tutors Answer Your Questions about Roman-numerals (FREE)
Question 433835: For the following function, C computes a value, where if you add millions of dollars to the value, the result is the cost of implementing a city recycling project when x, as a persent, citizens participate.
C(x)= 1.5x over 100-x
Using this model, determine the cost if 60% of the citizens participate.
Using this model find the % of participation that can be expected if $5 million is spent of this recycling project. Set up and equation and solve.
Click here to see answer by JBarnum(2044)   |
Question 166726: The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.
The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Click here to see answer by JBarnum(2044) |
Question 166723: The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
The quality-assurance department found in a sample of 50 customers at the Warren Road MacBurger that the mean waiting time was 2.75 minutes.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Click here to see answer by JBarnum(2044) |
Question 166722: A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight of the boxes, a few were checked.
The mean weight was 20.4 pounds, the standard deviation 0.5 pounds. How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
Click here to see answer by JBarnum(2044) |
Question 166721: The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds
1. What is the value of the population mean? What is the best estimate of this value?
2. Explain why we need to use the t distribution. What assumption do you need to make?
1. For a 90 percent confidence interval, what is the value of t?
2. Develop the 90 percent confidence interval for the population mean.
3. Would it be reasonable to conclude that the population mean is 63 pounds?
Click here to see answer by JBarnum(2044) |
Question 550355: the sum of an infinite geometric series with first term a and common ratio r<1 is given by a/1-r. the sum of a given infinte geometric series is 200, and the common ratio is 0.15. What is the second term of this series?
the act answer key has f as the answer but if u could please show work and how it got that, then that would be fantastic. Thanks for ur help and have a great day!
f. 25.5
g. 30
h. 169.85
j. 170
k. 199.85
Click here to see answer by stanbon(57377) |
Question 550312: Does anyone know what this " / " symbol means? I am entering a contest where one needs to answer a skill testing question and they are always very simple. This is the entire question
(5X8) + (12/3) =
is it 12 divided by 3?
Click here to see answer by Alan3354(30993)  |
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Older solutions: 1..45, 46..90, 91..135
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