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irga5000 [103]
3 years ago
10

7. WILL MARK BRAINLIEST!! HELP! ​

Mathematics
1 answer:
Vilka [71]3 years ago
6 0

Step-by-step explanation:

first factorise the denominator

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A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp
fenix001 [56]

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion \hat p

\hat p = \dfrac{x}{n}

\hat p = \dfrac{55}{100}

\hat p = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576

Then the margin of error E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}

E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}

E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}

E = 2.576 \times0.04975

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: \hat p - E

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

6 0
3 years ago
Identify the property used to find the equivalent expression (9*3)*6=6*(9*3)
Free_Kalibri [48]

Answer:

Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : (9*3)*6-(6*(9*3))=0 STEP 1 : Equations which are always true 1.1    Solve   0  = 0. This equation is a tautology (Something which is always true) Equation is alway true

Hoped I helped

6 0
3 years ago
Read 2 more answers
PLEASE HELP .........!!!!!!!!!!!!!!!!!!!!!!!!’!!!!
lisov135 [29]

It goes in the order 3,1,2,4

5 0
3 years ago
Is the statement (3^5)^4 equal to (3^4)^5 ? explain the reasoning, DUE TOMORROW
Shkiper50 [21]

Note that both 5 and 4 are exponents, and their product is 5*4=20, or 4*5=20. Thus,

(3^5)^4 is equal to (3^4)^5

Review:

(a to the power b)to the power c = a to the power bc.

Thus, (3 to the power 5)^4 = 3^20; the same is true if you reverse the positions of the 5 and the 4.

4 0
3 years ago
Read 2 more answers
How to solve the 1st question. it's really tough. pls explain with steps
Ivan
So the maximum x and maximum y is consists the first formula (smaller than or equals 11) u can easily determine the maximum and minimum numbers of variables from given disequilibriums.

Hope it helps!
#MissionExam001

6 0
3 years ago
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