What is the solution to the equation below?

1 answer:

3 0

A. W=2/12

4w=2/3

(Divide both sides of the equation by 4)

4w/4=2/3/4

(Any expression divided by it’s self is 1)

w=2/3/4

(To divide a fraction by a number, multiply by it’s reciprocal)

w=2/3 • 1/4

(Reduce the numbers with the greatest common factor 2)

w= 1/3 • 1/2

(Multiply the fractions)

w= 1/3 • 1/2= 1/6

1/6=2/12

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Suppose that prior to conducting a coin-flipping experiment, we suspect that the coin is fair. How many times would we have to f

BabaBlast [244]

Answer:

153 times

Step-by-step explanation:

We have to flip the coin in order to obtain a 95.8% confidence interval of width of at most .14

Width = 0.14

ME = $\frac{width}{2}$

ME = $\frac{0.14}{2}$

ME = $0.07$

$ME\geq z \times \sqrt{\frac{\widecap{p}(1-\widecap{p})}{n}}$

use p = 0.5

z at 95.8% is 1.727(using calculator)

$0.07 \geq 1.727 \times \sqrt{\frac{0.5(1-0.5)}{n}}$

$\frac{0.07}{1.727}\geq sqrt{\frac{0.5(1-0.5)}{n}}$

$(\frac{0.07}{1.727})^2 \geq \frac{0.5(1-0.5)}{n}$

$n \geq \frac{0.5(1-0.5)}{(\frac{0.07}{1.727})^2}$

$n \geq 152.169$

So, Option B is true

Hence we have to flip 153 times the coin in order to obtain a 95.8% confidence interval of width of at most .14 for the probability of flipping a head

6 0

3 years ago

36.24 divided by 9.06 is equal to<br><br> i need step by step

Bezzdna [24]

Answer:

Step-by-step explanation:

if 36.24 is divided by 90.6 can be 9.06

36.24÷9.06

or by other style

36.24×100=3624

90.6×100= 9060

according to the question