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3 years ago

SOMEONE HELP PLEASE

Mathematics

1 answer:

Grace [21]3 years ago

3 0

Y=7-4X

GRADIENT OR SLOP NEED TO BE SAME TO BE PARALLEL.

THE FIRST LINE WHEN X=0 Y IS 9 FROM EQUATION WHEN YOU PUT X=0 Y WILL BE 9

THE SECOND LINE WHEN X=0 Y IS 7 PASSES THROUGH (0,7)

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Based on the sample of 500 people, 42% owned cats. Calculate the test statistic. Round to two decimal places.

Tanzania [10]

Answer:

z= 3.63

z for significance level = 0.05 is ± 1.645

Step-by-step explanation:

Here p = 42% = 0.42

n= 500

We formulate our null and alternative hypotheses as

H0: p= 0.42 against Ha : p> 0.42 One tailed test

From this we can find q which is equal to 1-p= 1-0.42 = 0.58

Taking p`= 0.5

Now using the z test

z= p`- p/ √p(1-p)/n

Putting the values

z= 0.5- 0.42/ √0.42*0.58/500

z= 0.5- 0.42/ 0.0220

z= 3.63

For one tailed test the value of z for significance level = 0.05 is ± 1.645

Since the calculated value does not fall in the critical region we reject our null hypothesis and accept the alternative hypothesis that more than 42% people owned cats.

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3 years ago

What's 9 + 10 ? give me the right answer

Nataliya [291]

Answer:

Step-by-step explanation:

Add 9 to 10

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2 years ago

Help Wegnerkolmp2741o i need ur help!

melamori03 [73]

Answer:

Step-by-step explanation:

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3 years ago

Restless Leg Syndrome and Fibromyalgia

mixas84 [53]

Answer:

The probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

Step-by-step explanation:

Denote the events as follows:

<em>F</em> = a person with fibromyalgia

<em>R</em> = a person having restless leg syndrome

The information provided is as follows:

P (R | F) = 0.33

P (R | F') = 0.03

P (F) = 0.02

Consider the tree diagram attached below.

Compute the probability that a person with restless leg syndrome has fibromyalgia as follows:

$P(F|R)=\frac{P(R|F)P(F)}{P(R|F)P(F)+P(R|F')P(F')}\\\\=\frac{(0.33\times 0.02)}{(0.33\times 0.02)+(0.03\times 0.98)}\\\\=0.183333\\\\\approx 0.1833$

Thus, the probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

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2 years ago

Lines j and k are intersected by line m. At the intersection of lines j and m, the uppercase left angle is 93 degrees. At the in

alexandr402 [8]

Answer: converse alternate exterior angles theorem

Step-by-step explanation:

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2 years ago