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3 years ago

Answer fast please and thank you

Mathematics

1 answer:

Anika [276]3 years ago

3 0

Answer:

wait did u upload this twice-

Step-by-step explanation:

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An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sam

telo118 [61]

Answer:

The z-statistic for this test is -1.547 and P-value of the test is 0.0618

Step-by-step explanation:

An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes.

We are given that A random sample of n=82 C of I students found 30 with brown eyes.

n = 82

x = 30

$H_0:p=0.45\\ H_a:p\neq0.45$

Now to find z statistic we will use one sample proportion test

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{30}{82}$

$\widehat{p}=0.365$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.365-0.45}{\sqrt{\frac{0.45(1-0.45)}{82}}}$

= $-1.547$

So, the z-statistic for this test is -1.547

Now refer the z table for p value .

p value = 0.0618

The P-value of the test is 0.0618

Hence the z-statistic for this test is -1.547 and P-value of the test is 0.0618

6 0

3 years ago

Imogen bought i number of invitations to send out for her party. After she sent out 19, she was left with 11. What is the value

Step2247 [10]

Answer:

Step-by-step explanation:

19+11=30

3 0

4 years ago

Read 2 more answers

How would you turn "a computer technician charges $75 for a consultation plus $35 per hour" in slope intercept form?

Tanzania [10]

Y = 35/1 + 75

If there is a starting fee ($75) it does not change, but if there is ALSO an hourly fee ($35) that can double, triple, etc by the hour. Hope this helps!

4 0

3 years ago

Can someone answer and explain?

Snezhnost [94]

So you would need to find the area of a triangle using the height as 3.5 inches and the base as 4 inches. Once you find that, then multiply by 2 to get both of the triangles.

To get the rectangles you will do 9 x 4. Then multiply that answer by 3 to get the three rectangles.

To get the final answer you will add the sum of the triangles and the sum of the rectangles to get the answer.

Hope this helps!

5 0

3 years ago

PLEASEE HELPP WILL BRAINLIST find the output when x = 0

Varvara68 [4.7K]

Answer:

output: 8

Step-by-step explanation:

since x=0 y would equal 8 which is the output.

6 0

3 years ago