Tutors Answer Your Questions about Finance (FREE)
Question 1183442: The lifetime of a mechanical assembly in a vibration test is exponentially
distributed with a mean of 400 hours.
(a) What is the probability that an assembly on test fails in less than 100 hours?
(b) What is the probability that an assembly operates for more than 500 hours
before failure?
(c) If an assembly has been on test for 400 hours without a failure, what is the
probability of a failure in the next 100 hours?
(d) If 10 assemblies are tested, what is the probability that at least one fails in less
than 100 hours? Assume that the assemblies fail independently.
(e) If 10 assemblies are tested, what is the probability that all have failed by 800
hours? Assume that the assemblies fail independently.
Click here to see answer by robertb(5830)   |
Question 1183466: Hello
Interest=principal x rate x time
Is the time for this question 11 or 11 / 12?
Ricardo borrowed $1300 from his brother. He plans to pay him back in 11 months. If he pays 3.5% interest on the loan, what is the approximate amount he will pay back in 11 months,
Thanks in advance
Click here to see answer by josgarithmetic(39617) |
Question 1183466: Hello
Interest=principal x rate x time
Is the time for this question 11 or 11 / 12?
Ricardo borrowed $1300 from his brother. He plans to pay him back in 11 months. If he pays 3.5% interest on the loan, what is the approximate amount he will pay back in 11 months,
Thanks in advance
Click here to see answer by MathTherapy(10552)  |
Question 1183466: Hello
Interest=principal x rate x time
Is the time for this question 11 or 11 / 12?
Ricardo borrowed $1300 from his brother. He plans to pay him back in 11 months. If he pays 3.5% interest on the loan, what is the approximate amount he will pay back in 11 months,
Thanks in advance
Click here to see answer by ikleyn(52781)  |
Question 1177703: 3- The quality assurance department for Pepsi Distributors, Inc. maintains meticulous records on the bottling line for two-liter Pepsi bottles. Records indicate that the process follows the normal probability distribution with a mean amount per bottle of 2.01 liters and a standard deviation of 0.025 liters. The foreman randomly selects 25 bottles from the bottling line and
determines that the mean amount per bottle is 2.005 liters
a. Compute the sampling error
b. Compute the standard error of the sampling distribution of sample means.
c. Compute the probability that the sample of 25 bottles would have a mean of 2.005 liters or more.
d. Suppose the foreman selects a second sample of 16 bottles and determines that the mean is 1.994 liters. Compute the probability that the sample of 16 bottles would have a mean of 1.994 liters or more.
Click here to see answer by robertb(5830) |
Question 1183636: a person wishes to deposits $5000 per year in a savings account which earns interest of 8 percent per year compounded annually . assume the first deposit is made at the end of this current year and additional deposits at the end of each following year
a: to what sum will the investment grow at the time of the 10 deposit.
b: who much interest will be earned.
Click here to see answer by ikleyn(52781) |
Question 1183931: The accompanying figure summarizes the average spending patterns for people of different ages in a certain nation. Determine whether the spending pattern given below is equal to, above, or below the national average. Assume that salaries and wages are after taxes.
A single 56-year-old man with a monthly salary of $3000 spends $370 per month on .
Click here to see answer by ikleyn(52781) |
Question 1183980: A 455-foot fence encloses a pasture. What is the length of each side of the pasture? The shape of the pasture is a trapezoid (sort of).
One side says 3x ft, one side says 1.5x ft, one side says 180ft, and the last side says x ft.
How do I solve this problem?
Click here to see answer by ikleyn(52781) |
Question 1184018: Susan and Jenny run a 200 m race which Susan wins by 10 m. Jenny suggests that they run
another race, with Susan starting 10 m behind the starting line. Assuming they run at the same
speeds as in the first race, what is the outcome of the race?
Click here to see answer by ikleyn(52781) |
Question 1184018: Susan and Jenny run a 200 m race which Susan wins by 10 m. Jenny suggests that they run
another race, with Susan starting 10 m behind the starting line. Assuming they run at the same
speeds as in the first race, what is the outcome of the race?
Click here to see answer by MathTherapy(10552) |
Question 1184018: Susan and Jenny run a 200 m race which Susan wins by 10 m. Jenny suggests that they run
another race, with Susan starting 10 m behind the starting line. Assuming they run at the same
speeds as in the first race, what is the outcome of the race?
Click here to see answer by greenestamps(13200)  |
Question 1184017: Boris and Michael are jogging around a lake. It takes Boris 6 minutes to complete a lap and
Michael takes 8 minutes. After completing each lap, the boys take a rest, Boris for one minute
and Michael for two minutes. Then they continue jogging. If they started jogging together,
how long, in minutes, does it take until they are next together?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1184017: Boris and Michael are jogging around a lake. It takes Boris 6 minutes to complete a lap and
Michael takes 8 minutes. After completing each lap, the boys take a rest, Boris for one minute
and Michael for two minutes. Then they continue jogging. If they started jogging together,
how long, in minutes, does it take until they are next together?
Click here to see answer by greenestamps(13200) |
Question 1184017: Boris and Michael are jogging around a lake. It takes Boris 6 minutes to complete a lap and
Michael takes 8 minutes. After completing each lap, the boys take a rest, Boris for one minute
and Michael for two minutes. Then they continue jogging. If they started jogging together,
how long, in minutes, does it take until they are next together?
Click here to see answer by ikleyn(52781) |
Question 1184038: 2 unequal jugs are filled with diluted cordial with different concentrations. The
first jug has cordial and water in the ratio 2:5 and the second jug has cordial and
water in the ratio 3:7. The contents of the two jugs are then combined.
If the second jug had twice the volume of diluted cordial compared to the first,
what is the ratio of cordial to water in the final mixture?
Click here to see answer by ikleyn(52781) |
Question 1184038: 2 unequal jugs are filled with diluted cordial with different concentrations. The
first jug has cordial and water in the ratio 2:5 and the second jug has cordial and
water in the ratio 3:7. The contents of the two jugs are then combined.
If the second jug had twice the volume of diluted cordial compared to the first,
what is the ratio of cordial to water in the final mixture?
Click here to see answer by greenestamps(13200) |
Question 1184038: 2 unequal jugs are filled with diluted cordial with different concentrations. The
first jug has cordial and water in the ratio 2:5 and the second jug has cordial and
water in the ratio 3:7. The contents of the two jugs are then combined.
If the second jug had twice the volume of diluted cordial compared to the first,
what is the ratio of cordial to water in the final mixture?
Click here to see answer by robertb(5830) |
Question 1184072: Tara and Ben each run 6km every morning. Tara runs at an average speed of 10 km/h, while Ben runs at an average speed of 3 m/s.How long after Tara, should Ben begin running if they wish to complete their runs at the same time? Give your answer in minutes and seconds.
Click here to see answer by ankor@dixie-net.com(22740) |
Question 1184176: A refrigerator manufacturer determines that its weekly cost, in dollars, of producing x refrigerators is given by C(x)= 2x^2+15x+1500, 0≤ x≤ 200.
Then C(101)−C(100)/101−100= ____________ dollars per refrigerator.
Click here to see answer by ikleyn(52781) |
Question 1184268: About 9% of the population has a particular genetic mutation. 800 people are randomly selected.
Find the standard deviation for the number of people with the genetic mutation in such groups of 800. (Remeber that standard deviation should be rounded to one more decimal place than the raw data, in this case 1 decimal place is necessary.)
Click here to see answer by Boreal(15235)  |
Question 1184333: About 4% of the population has a particular genetic mutation. 500 people are randomly selected.
Find the mean for the number of people with the genetic mutation in such groups of 500. (Remember that means should be rounded to one more decimal place than the raw data.)
Click here to see answer by ikleyn(52781) |
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