3×1=3+3=6 and that your answers
Answer:
Step-by-step explanation:
Since, According to the question,
Total mice die in 1991 = 8064483601014110592
Total changes in the population of mice in 1991 = 2.946495792e 19
Since,
The total changes in the population of the mice in 1991= difference between the population of total mice born and the total mice die.
⇒ 2.946495792e 19 = total mice born on 1991 - 8064483601014110592
⇒ total mice born on 1991 = 2.946495792e 19 + 8064483601014110592
⇒ total mice born on 1991 = 3.7529442e+19
Thus, On 1991 mice were born.
Note: Here, we assume that the mice born is more than mice dying because the population of mice is increasing every year exponentially.
Answer:
The number of hours Jackie worked = 80hours
Step-by-step explanation:
Last summer:
Jackie made $960
Rachel made $960
let number of hours Jackie worked = x
Rachel worked 16 hours more than Jackie:
Number of hours Rachel worked = x + 16
if Jackie earned $y per hour
Rachel earned $2 less per hour = y-2
Jackie: 960 = x × y = xy
Rachel: 960 = (x+16)(y-2)
960 = xy -2x +16y -32
recall xy = 960, insert the value for xy
960 = 960 - 2x +16y -32
- 2x +16y -32 = 0
2x -16y = -32
x-8y = -16
x = 8y-16
recall xy = 960, insert the expression for x
(8y-16)y = 960
8y² -16y = 960
y² -2y - 120 = 0
y²+10y-12y -120 = 0
y(y+10) -12(y+10) = 0
(y-12) = 0 or (y+10) = 0
y = 12 or -10
since y can't be negative, y = 12
x = 8y-16
x = 8(12) -16 = 80
The number of hours Jackie worked = x = 80 hours
According to the 3:1 ratio, you expect, out of a population of 1000 people, 750 non-hemophilia and 250 hemophilia.
The chi-square value can be calculated by the formula:
where:
O = observed value = 210
E = expected value = 250
Therefore:
χ² = (210 - 250)² / 250
= 6.4
Now, look at a χ<span>² distribution table, in order to find the p-value. In this case, you have only 1 degree of freedom and the closest </span>χ<span>² is 6.6 which corresponds to a p-value of 0.01.
Since p < 0.05, which is the minimum value generally accepted, we can say that the data do not support the hypothesis.</span>
I think it is A as $16,845,562,487,550/ 3.11591917 x 10^8 is <span>54062.89948 so the nearest answer is A
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