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kirza4 [7]
3 years ago
9

From time to time police set up roadblocks to check cars to see if the safety inspection is up to date. At one such roadblock th

ey issued tickets for expired inspection stickers to 22 of 628 cars they stopped. Based on the results at this roadblock, they construct a 95% confidence interval for the true proportion of all drivers with expired inspections and find it to be (2%, 5%). Intepret this interval.
Mathematics
1 answer:
77julia77 [94]3 years ago
7 0

Answer: Police can be 95% confident that true population proportion lies in (2%, 5%).

Step-by-step explanation:

Interpretation of confidence interval of population proportion : A person can be 95% confident that true population proportion lies in it.

Given : From time to time police set up roadblocks to check cars to see if the safety inspection is up to date. At one such roadblock they issued tickets for expired inspection stickers to 22 of 628 cars they stopped.

95% confidence interval for the true proportion of all drivers with expired inspections = (2%, 5%).

Interpretation :  Police can be 95% confident that true population proportion lies in (2%, 5%).

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The midterm exam will have a total of 108 marks and there are twice as many 05 marks questions than 02 marks questions. Each que
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Answer: 9 (2 mark question) and 18 (5 marks questions)

Step-by-step explanation:

Given: Total mark = 108

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Therefore 5 mark question = 2x

ATQ

⇒5(2x)+2(x) = 108

⇒10x+2x =108

⇒12x = 108

⇒x = 108/12

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Total two mark questions are 9 and 5 mark questions are 18.

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3 years ago
Problem 11. (3 pt) [MBB2012, Ex. 4.46, p. 150, Dice] An experiment consists of tossing a single die and observing the number of
dybincka [34]
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3 years ago
What is 65 to the 5 power multiplied by 10 to the 9 power divded by 42??
Tcecarenko [31]
So lets set up what our question looks like. 
65^{5} *  10^{9}  
 ÷ 42 

So we can follow the rules of PEMDAS
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And..
10^{9}  = 1,000,000,000



Now we have to multiply those two numbers next...
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Big numbers... 
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3 years ago
Which statement is true when comparing how a student would complete the solution for the linear equation -2x + 3 = 6 to how the
lidiya [134]

Answer:

Completing the solution for the equation is the same as completing the solution for the inequality. The student would multiply both sides by -2 in either case.

Completing the solution for the equation is the same as completing the solution for the inequality. The student would multiply both sides by -2 in either case.

Step-by-step explanation:

7 0
3 years ago
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Find the zeros of y=x2 - 4x - 9 by completing the square.
Tcecarenko [31]

Answer:

x = 2 ± \sqrt{13}

Step-by-step explanation:

Given

y = x² - 4x - 9

To find the zeros, set y = 0, that is

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To complete the square

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x = 2 ± \sqrt{13} ← exact solutions

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3 years ago
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