All categories

3 years ago

What is the probability of tossing one coin for two 'tails' in a row?

2 answers:

tatiyna3 years ago

8 0

The probability of tossing two tails in a row is 1/2 possibility tossing tails the first time, then another 1/2 possibility of tossing tails again, so from the start, we would multiply 1/2 and 1/2 to get a 1/4 possibility of tossing two tails in a row.

Hope this helps and have a nice day:)

Tasya [4]3 years ago

4 0

Assuming the coin is fair, probability of getting one tail is 50%, probability of getting two tails in a row is 50%*50% = 25% or 1/4

You might be interested in

A political analyst found 43% of 300 randomly selected republican voters feel that the federal government has too much power. Fi

Genrish500 [490]

Answer:

Step-by-step explanation:

We want to determine 95% confidence interval of the population proportion of republican voters who feel that the federal government has too much power.

43% of 300 randomly selected republican voters feel that the federal government has too much power. This means that

p = 43/100 = 0.43

q = 1 - p = 1 - 0.43 = 0.57

n = 300

mean, u = np = 300 × 0.43 = 129

Standard deviation, s = √npq = √129×0.57 = 8.575

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

129 +/- 1.96 × 8.575/√300

= 129 +/- 0.9704

The lower end of the confidence interval is 129 - 0.9704 =128.0296

The upper end of the confidence interval is 129 + 0.9704 =129.9704

Therefore, with 95% confidence interval, the mean of the population proportion of republican voters who feel that the federal government has too much power is between 128.0296 and 129.9704

7 0

4 years ago

The following proof shows an equivalent system of equations created from another system of equations. Fill in the missing reason

STALIN [3.7K]

Answer:

As addition property of equality clearly states that if we add the same number to both sides of an equation, the sides remain equal.

Step-by-step explanation:

$2x + 2y = 14$

$-x + y = 5$ Add x in both sides (Addition Property of Equality)

$2x + 2y = 14$

$y = x + 5$ Multiply both sides by 2

$2x + 2y = 14$

$2y = 2x + 10$ Subtract 2x in both sides

$+\left \{ {{2x + 2y=14} \atop {-2x + 2y=10}} \right.$ ∵adding both equation

$4y = 24$ divide both sides by 4

$y = 6$

Put the value of y = 6 to the equation $-x + y = 5$

$-x + 6 = 5$ Subtract 6 from both sides

$-x = -1$ Change the sign

$x = 1$

Keywords: Addition property of equality, reason, proof

Learn more about operations from brainly.com/question/3474035

#learnwithBrainly

4 0

3 years ago

JK and LM are perpendicular diameters of a circle. They are each 12 inches long. What is the approximate length of chord LK?

MA_775_DIABLO [31]

ANSWER:

I think the approximate length og chord Lk is around 8.5 inches long

3 0

3 years ago

Solution of the ab+ac

seropon [69]

Answer:

= a(b+c)

Step-by-step explanation:

you can factorize out the a

5 0

1 year ago

About how much would it cost the family to move from New York to Florida

Olin [163]

It really depends on how much the family is moving, what company they are using, or if they are using their own vehicle, and how much trips they want to make.

By car, it takes 17 hrs and 26 minutes to travel the 1152.9 miles via I-95 S. This does not include traffic, any stops for meals, rest, or restrooms. If you are making multiple trips, this could amount to even longer time that can extend over weeks or months.

if you want to see what the mile per gallon is, you can go to fueleconomy. This would tell you average miles per gallons for fairly new (?) cars. This is IMPORTANT, because you want to see how much it will cost your family to gas up certain cars. Also keep in mind that different gas companies have different prices.

Also depending on which restruants you go too, it can be fairly expensive, so usually you would stick with fast foods (once in awhile, cuz they are unhealthy) or places with MRE. (no not talking about the military food, just like already cooked food that you only need to heat up food).

Another factor you want to know is the route you are taking. The route you take can is crucial because it not only can save you or extend the time it takes for you to go from your starting point to your destination, it also can give you some other things as well, including scenery, etc.

These are just a few things that you have to find out before you do anything, as they can greatly impact any outcomes and the amount of time, money, and effort you need to put in to move to Florida.

hope this helps

3 0

3 years ago