Mathematics, 14.04.2020 15:48 jose477
Trains headed for destination A arrive at the train station at 15-minute intervals tarting at 7am, where as trains headed for destination B arrive at 15-minute intervals tarting at 7:05am. (a) If a certain passenger arrives at the station at a time uniformly distributed between 7 and 8am, and then gets on the first train that arrives, what proportion of time does he or she go to destination A? (b) What if the passenger arrives at a time uniformly distributed between 7:10am and 8:10am?
Answers: 1
Mathematics, 21.06.2019 21:30
If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2
Answers: 2
Mathematics, 21.06.2019 23:00
Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference รฎล(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference รฎล(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference รฎล(x - x)2 by more than data sets (ii) and (iii). none of the above
Answers: 2
Mathematics, 22.06.2019 01:00
Given the numbers c = โ3 and d = 4, which statement is true? a. |โc| = 3 and |โd| = โ4 b. |โc| = 3 and โ|d| = โ4 c. โ|c| = โ4 and โ|d| = 3 d. |โc| = 3 and โ|d| = 4
Answers: 1
Mathematics, 22.06.2019 04:50
Solve the proportionx+1 14 = x-1 20 a. -3/17 b.10/7 c.7/10 or d. -17/3
Answers: 1
Trains headed for destination A arrive at the train station at 15-minute intervals tarting at 7am, w...
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