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3 years ago

Kelly flips a coin 50 times. How many times should she expect it to lands on heads?

Mathematics

2 answers:

timama [110]3 years ago

6 0

Answer:

Step-by-step explanation:

You would expect it to be a 50/50 chance, so if you flip it 50 times

50/2 is 25, you would expect it to land on heads 25 times

Zolol [24]3 years ago

3 0

Answer:

Step-by-step explanation:

Brainliest please I haven't gotten it before

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Samantha invested $50,000 in an account paying an interest rate of 4.1% compounded daily. Assuming no deposits or withdrawals ar

Sever21 [200]

Answer:

$69,408.17 = $69,410 rounded

Step-by-step explanation:

Final investment value

$69,408.17

Total interest earned

$19,408.17

Initial balance

$50,000.00

Total monthly deposits

$0.00

Effective Annual Rate (APY)

4.185%

The formula used in the compound interest calculator is A = P(1+r/n)^(nt)

A = the future value of the investment

P = the principal investment amount

r = the interest rate (decimal)

n = the number of times that interest is compounded per period

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3 years ago

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Draw 3 rows with 2 counters in each row. Write a word problem that can be acted out using these counters.

Margaret [11]

What problem a slove with fraction 2 3/4 will be greater than?

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3 years ago

34. Find each of the following probabilities when n indepen- dent Bernoulli trials are carried out with probability of success p

mr Goodwill [35]

Answer:

A.) (1 - p)^n

B.) 1 - (1 - p)^n

C.) (1 - p)^n + np*(1-p)^(n-1)

D.) 1 - (1 - p)^n - np*(1-p)^(n-1)

Step-by-step explanation:

General form of a binomial probability :

P(x = x) = nCx * p^x * q^(n-x)

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A.) probability of no successes ;

P(x = 0) = nC0 * p^0 * (1 - p)^(n-0)

P(x = 0) = 1 * 1 * (1 - p)^n

P(x = 0) = (1 - p)^n

Probability of atleast one success = 1 - P(no success)

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P(x = 0) = (1 - p)^n

P(x ≥ 1) = 1 - P(x = 0) = 1 - (1 - p)^n

Probability of at most one success

P(x ≤ 1) = p(x = 0) + p(x = 1)

P(x = 0) = (1 - p)^n

P(x = 1) = nC1 * p^1 * (1 - p)^(n-1)

P(x = 1) = n * p * (1 - p)^(n-1) = np*(1-p)^(n-1)

P(x ≤ 1) = (1 - p)^n + np*(1-p)^(n-1)

Probability of atleast two successes:

(1 - probability of at most 2 successes)

P(x ≥ 2) = 1 - P(x ≤ 1)

P(x ≥ 2) = 1 - (p(x = 0) + p(x = 1))

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3 years ago

Algebraic Expression<br>x + y + 2<br>Constants | Variable/s/term/s Degree of term

aleksandr82 [10.1K]

Constants : 1 (the only constant term is 2)

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3 years ago

What times what equals 196

timofeeve [1]

Square root of 196 is 14

6 0

3 years ago

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