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3 years ago

True or False, the chance of flipping heads on a coin 3 times in a row is 1/2

Mathematics

2 answers:

nika2105 [10]3 years ago

7 0

Answer:

False

Step-by-step explanation:

Each toss is an independent event, so the probability of three tosses of heads in a row is the product of the three probabilities..

Each probability of heads is

p(heads) = 1/2

p(heads, heads, heads) = p(heads) * p(heads) * p(heads) = 1/2 * 1/2 * 1/2 = 1/8

Answer: False

bogdanovich [222]3 years ago

3 0

true flip a coin it's fifty fifty

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3 years ago

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Answer:

a) The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at 0.01% level of significance

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Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

Step-by-step explanation:

Step(i):-

Given random sample 'n' = 250

Given data sample mean x⁻ = 24.5

Standard deviation = 3.3

Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

test statistic

$Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{24.5 - 24}{\frac{3.3}{\sqrt{250} } } = \frac{0.5}{0.2087} = 2.397$

a) 99% or 0.01% level of significance

Level of significance ∝ = 0.01

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} =2.576$

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Null hypothesis is accepted at 0.01% level of significance

They score is above 24 on the math portion of the exam

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Level of significance ∝ = 0.05

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96$

The Z -value 2.397 > 1.96 at 95% or 0.05% level of significance

Null hypothesis is Rejected at 0.05% level of significance

They score is below 24 on the math portion of the exam

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2 years ago

What is the surface area of the triangular prism Not drawn to scale 2001 2376 2592 4320

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Answer:

Option B. 2376 Square feet

Step-by-step explanation:

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Base (B) = 24ft

Length (L) = 40ft

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A = BH + 2LS + LB

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B is the Base

L is the Length

H is the Height

S is the Slant Height

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A = 216 + 1200 + 960

A = 2376 ft2

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True or False, the chance of flipping heads on a coin 3 times in a row is 1/2​

True or False, the chance of flipping heads on a coin 3 times in a row is 1/2