3 years ago

Factor the algebraic expression below in terms of a single trigonometric function. csc 2x - 1

1 answer:

7 0

If csc(2x) = 1 / sin(2x), and 1 = sin(2x) / sin(2x), then ( 1 / sin(2x) ) - ( sin(2x) / sin(2x) ) = ( 1 - sin(2x) ) / sin(2x)

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e 400 trials in which the assistant maintained a neutral expression, the driver stopped in 229 out of the 400 trials. Find a 95%

Fittoniya [83]

Answer:

Step-by-step explanation:

n = 400

Proportion p = 229/400= 0.5725

For 95% confidence interval we use Z value as 1.96

Std error = 0.025

margin of error = 1.96*0.025

Confidence interval 95% = 0.5725±Margin of error

= (0.524, 0.621)

b) When smiled x becomes 277

p = 0.6925

Std error = 0.023

Margin of error= 1.96*0.023

Confidence interval = (0.647, 0.738)

Smiling increases the chances of stopping since mean and conidence interval bounds are showing increasing trend.

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3 years ago

Suppose that E and F are two events and that Upper P (Upper E and Upper F )equals0.3 and Upper P (Upper E )equals0.5. What is Up

m_a_m_a [10]

Answer:

$P(\frac{F}{E}) =\frac{0.3}{0.5} =0.6$

Step-by-step explanation:

Step 1:-

Suppose that E and F are two events and that P(E n F) = 0.3

also given P(E) =0.5

Conditional probability:-

if E₁ and E₂ are two events in a Sample S and P(E₁)≠ 0, then the probability of E₂ , after the event E₁ has occurred, is called the Conditional probability

of the event E₂ given E₁ and is denoted by

$P(\frac{F}{E}) = \frac{P(EnF)}{P(E)}$

$P(\frac{F}{E}) =\frac{0.3}{0.5} =0.6$

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3 years ago

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Rudik [331]

Answer:

ST = CHORD

PR = RADIUS

MN = DIAMETER

Step-by-step explanation:

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Masteriza [31]

Answer:

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Step-by-step explanation:

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Paraphin [41]

Answer:

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Step-by-step explanation:

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