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3 years ago

Please I really need help! I will mark you as brainliest!

Mathematics

1 answer:

dalvyx [7]3 years ago

7 0

The answer is 1/12 because the probability of flipping a coin and getting tails is 1/2 and the probability of rolling a dice and getting 4 is 1/6 so multiply both of those and you get 1/12

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The U.S. Census Bureau announced that the median sales price in 2014 for new homes was $282,800 and the mean sales price was $34

victus00 [196]

Answer:

a) 0.9964

b) 0.3040

Step-by-step explanation:

Given data:

standard deviation = $90,000

Mean sales price =$345,800

sample mean = $370,000

Total number of sample = 100

calculate z score for [/tex](\bar x = 370000)[/tex]

$z = \frac{\bar x - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{370000 - 345800}{\frac{90000}{\sqrt{100}}}$

z = 2.689

P(x<370000) = P(Z<2.689)

FROM STANDARD NORMAL DISTRIBUTION TABLE FOR Z P(Z<2.689) = 0.9964

calculate z score for (\bar x = 350000)

$z = \frac{\bar x - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{350000 - 345800}{\frac{90000}{\sqrt{100}}}$

z = 2.133

$P(350000 \leq \bar x \leq 365000) = P(0.467 \leq Z\leq 2.133) = P(Z\leq 2.133) - P(Z\leq 0.467)$

FROM NORMAL DISTRIBUTION TABLE Z VALUE FOR

$P(Z\leq 2.133) = 0.9836$

$P(Z\leq 0.467) = 0.6796$

SO, = 0.9836 - 0.6796 = 0.3040

4 0

3 years ago

Which inequality is equivalent to this one?

Tju [1.3M]

Answer:

D y-8 +2 ≤ -2+2

Step-by-step explanation:

y-8 ≤ -2

Add 2 to each side

y-8 +2 ≤ -2+2

6 0

3 years ago

Read 2 more answers

Which set of ordered pairs is made up of points on the graph of the function below? y=-3x+6

Alik [6]

Where's the graph?? I can't answer if there's no graph. lol xD

5 0

2 years ago

Please help i’ll give brainliest❤️

shusha [124]

3/8 would be your answer

4 0

3 years ago

Read 2 more answers

What is forty five percent of one-hundred forty five

BlackZzzverrR [31]

Answer:

65.25

Step-by-step explanation:

45% of 145 = 65.25

7 0

3 years ago