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Biology, 21.06.2019 16:30
Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?
Answers: 1
Biology, 21.06.2019 17:00
In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence:
Answers: 1
Biology, 21.06.2019 18:30
Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide β hydrazine + water b. nitrogen + water β hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide β nitrogen + water d. water + hydrogen peroxide β nitrogen + hydrazine
Answers: 3
Biology, 22.06.2019 15:00
Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.
Answers: 1
Mathematics, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57
Social Studies, 20.06.2020 00:57
Mathematics, 20.06.2020 00:57