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Lorico [155]
3 years ago
12

Find the value of X​

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
7 0
64 gotta be the correct answer
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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
Manu drives 50 miles each day. How many miles does he drive in five days.
Gnom [1K]

Answer: Manu drives 250 miles in 5 days.

Step-by-step explanation: Manu drives 50 miles each day, and he does this in each 1 out of 5 days. 50 + 50 + 50 + 50 + 50 is 250.

7 0
2 years ago
Read 2 more answers
Halp me again plez . . . . . . . . . . .
Katena32 [7]

Answer:

B?

good luckkkkkkkkkkkk

6 0
3 years ago
Read 2 more answers
What is the range of the data below <br> A.2 <br> B.5<br> C.12<br> D.13
Degger [83]

Range of the data = 13

Solution:

To find the range of the given data:

Let us first define what is range.

Range:

The range of the data set is the difference between the highest value and lowest value of the data set.

i. e. Range = Highest value – Lowest value

In the given number line,

Highest value indicated = 115

Lowest value indicated = 102

Range of the data = 115 – 102

                              = 13

Range of the data = 13

Hence the range of the given data is 13.

4 0
3 years ago
Who can help me with #39 please:))))
ehidna [41]
The answer to the problem is D

35  : 15 is the same as 7 : 3
4 0
3 years ago
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