Tutors Answer Your Questions about Numeric Fractions (FREE)
Question 124096: You are rolling a pair of dice, one red and one green. What is the probability of the following outcomes:
a. The sum of the two numbers you roll from the dice is 11.
b. The sum of the two numbers you roll is 7.
c. The sum of the two numbers you roll is 13.
Click here to see answer by stanbon(75887)  |
Question 124239: Please help me. I am new to statistics. I have tried this problem many times and having problem solving.
A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on
a very accurate scale. The results in grams were
3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477
(a) Construct a 90 percent confidence interval for the true mean weight.
(b) What sample size
would be necessary to estimate the true weight with an error of ± 0.03 grams with 90 percent confidence?
(c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during
manufacture.
Thank you kindly.
Click here to see answer by stanbon(75887) |
Question 124682: Please kindly help me. I am having problem answering this question. Thank you for your kind assistance.
1) A sample of PVC pipes coming off a production line were tested for pipe diameter size. The statistical results (in millimeters) were:
Mean 300
Median 300
Mode 300
Standard Deviation 15
Range 90
Number in Sample 100
a) According to the Normal Rule, what percent of the pipes had diameters between 285 and 315?
b) What would the range of pipe diameters need to be in order to capture 95% of the pipe diameters?
Click here to see answer by stanbon(75887) |
Question 125734: pre-algebra operations with positive and negative fractions. multiply. -3/4x2/5-1/8. in working the problem i did the multiplication first. -3/4x2/5 to get -3/2x1/5 then -3times1=-3 then two times five = 10 for an answer of -3/10-1/8=3/80. wrong answer. the book states -17/40 as the answer. I worked the problem again and got 7/40. this is as close as i can get to -17/40. why is this a negative number and how is the answer 17/40 and not 7/40? please help !!! thanks stumped.....
Click here to see answer by applesrbest(7) |
Question 125730: pre-algebra operations with positive and negative fractions. multiply. -3/4x2/5-1/8. in working the problem i did the multiplication first. -3/4x2/5 to get -3/2x1/5 then -3times1=-3 then two times five = 10 for an answer of -3/10-1/8=3/80. wrong answer. the book states -17/40 as the answer. I worked the problem again and got 7/40. this is as close as i can get to -17/40. why is this a negative number and how is the answer 17/40 and not 7/40? please help !!! thanks stumped.....
Click here to see answer by scott8148(6628)  |
Question 126620: 7.)two thrids + three fours= it is common denominators that's why i need help
8.)3-f=five sixs
16.)round 36.486 to the nearest hunhredths.
25.)decribe how to mentally calculate one tenth of $12.50.
30.)if l=1.5 and w= 0.75 then does lw equal?
Click here to see answer by checkley71(8403) |
Question 126620: 7.)two thrids + three fours= it is common denominators that's why i need help
8.)3-f=five sixs
16.)round 36.486 to the nearest hunhredths.
25.)decribe how to mentally calculate one tenth of $12.50.
30.)if l=1.5 and w= 0.75 then does lw equal?
Click here to see answer by stanbon(75887) |
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