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Evgesh-ka [11]
3 years ago
12

Please help please please please

Mathematics
1 answer:
rodikova [14]3 years ago
5 0
6
21.3
is the sum
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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
Dion practiced the long jump . He jumped 3.05 meters,2.74 meters and 3.3 meters.What was the average length of Dion's jumps?
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All you do is subtract 3.05 and 2.74 then do the same thing with the other ones and see what number is between all of them. What grade are you in
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The ice cream shop has 80 different possible sundaes which include 1 flavor of ice cream, 1 syrup, and 1 candy topping. If the i
Brut [27]
80 = 5 x 4 x 4

they have 4 flavors of icecream

you get this by multiplying all the variables and how many different possibilities each variable can be

so,
5 different syrups (5)
4 different candy toppings (4)

from that you know 5 x 4 x ? = 80

so 5 x 4 = 20, and 20 x 4 = 80

so 4 different flavors of ice cream (4)
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just olya [345]

Answer:

4.  3 units

5. Triangle  

6.  (0,2)

Step-by-step explanation:

4. The distance between the x axis and the point (8,3) is 3 units

5. Triangle  will be formed if the points A(-3, 0), B (0,3) and C (3,0) are joined together

6. Since the point lie on the y-axis, its x co-ordinate will be zero and the point will be (0,2)

7 0
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Answer:

LOL HAHAHAHAHA

answer: 2

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