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Lilit [14]
3 years ago
12

Which function is a horizontal translation of the parent quadratic function, f(x)=x^2? HELP PLS

Mathematics
1 answer:
Elenna [48]3 years ago
5 0

Answer:

f(x)=

{x}^{2}  + 8

or

{x}^{2}   - 4

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Of those women who are diagnosed to have early-stage breast cancer, one-third eventually die of the disease. Suppose a screening
Finger [1]

Answer:

A) Alternative hypothesis; Ha: p_o > ⅔

B) Null hypothesis;

H0: p_o = ⅔

C) There is sufficient evidence to support the claim that the community screening programme was effective

D) p-value = 0

Its less than the significance value and so we will reject the null hypothesis and conclude that the community screening programme was effective

Step-by-step explanation:

A) We are told that ⅓ of those diagnosed eventually die of the disease. Thus, ⅔ is the fraction that will survive the disease.

Thus, the null hypothesis is;

H0: p_o = ⅔

We are told that a screening programme was started to increase the survival rate. Thus,the alternative hypothesis is;

Ha: p_o > ⅔

B) null hypothesis is;

H0: p_o = ⅔

C) 164 out of the 200 women selected survived the disease.

Thus sample proportion is;

p^ = 164/200

p^ = 0.82

For the z-score value, we will use the formula;

z = (p^ - p_o)/√((p_o(1 - p_o)/n)

Now, p_o = ⅔ = 0.67

Thus;

z = (0.82 - 0.67)/√((0.67(1 - 0.67)/200)

z = 4.51

From online p-value from z-score calculator, we have p-value ≈ 0

This is less than the significant level of 0.05 and therefore we will reject the null hypothesis and conclude that the community screening program was effective.

D) p-value ≈ 0

Reject the null hypothesis

4 0
2 years ago
A car traveled 140 miles in 2 hours. At this rate, how many miles will the car traavel in 5 1/2
Viktor [21]
A car traveled 140 miles in 2 hours. at this rate, how many miles will the car travel in 5 1/2 hours?

You just multiply
8 0
2 years ago
Read 2 more answers
A random sample of students were surveyed as to how much non-school screen time
GaryK [48]

The percentage of students who spend less than 4 hours a week on screens which reported a grade average below 80 is 50%

Given, we have the report representing children spending time online, on social media or watching T.V, which has there effect on there grades as above or below 80.

By the question we know that the number of students who spends less than 4 hours a week on screen is:

9 + 9

= 18

And among the 18 students there are 9 students whose grade average is below 80.

So the percentage of the students who spends 4 hours a week on screen is:

= 9 ÷ 18 × 100%

= 100/2

= 50%

hence 50% students spend less than 4 hours a week on screens.

Learn more about Percentage here:

brainly.com/question/843074

#SPJ1

3 0
1 year ago
What is the value of the expression -3(3+2)
Elan Coil [88]

Answer:

-15

Step-by-step explanation:

6 0
2 years ago
Each of the
lana66690 [7]

Step-by-step explanation:

(4,8+8,9+14,19+20)/4=11,9725

4 0
2 years ago
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