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2 years ago

5

Please help me this brought my grade down and I need to get it up by next week please please help im giving all my points away f

or it

1 answer:

sergiy2304 [10]2 years ago

3 0

Answer:

Step-by-step explanation:

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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

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2 years ago

A pizzeria charged 12 per pizza plus an addition $3.00 for delivery which equation represents the cost of having any number of p

Liula [17]

Y=12x+3

y: total cost
x: number of pizzas

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3 years ago

Sonbull [250]

Answer:

SORRY I DID NOT UNDERSTAND

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2 years ago

A credit card company charges 22% interest fee on any charges not paid at the end of the month.. If the bill totals $450 for thi

kifflom [539]

I think the answer is 450x .22= 99$

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3 years ago

Help please<br> Divide. 64.2 ÷ 100

rodikova [14]

Answer:

0.642 is the answer please give brailiest

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3 years ago

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