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GalinKa [24]
1 year ago
5

An Internet service provider sampled 540 customers, and finds that 75 of them experienced an interruption in high-speed service

during the previous month.a) Obtain a point estimate, to at least three decimal places, for the population proportion of all customers who experienced an interruption in high-speed service during the previous month.b) Assuming the sample size is less than 5% of the population size, why can the sampling distribution of p-hat, the sample proportion of customers who experienced an interruption in high-speed service during the previous month, be approximately normal?c) Construct a 90% confidence interval for the proportion of all customers who experienced an interruption in high-speed service during the previous month.d) You wish to conduct your own study to determine the proportion of all customers who experienced an interruption in high-speed service during the previous month. What sample size would be needed for the estimate to be within 2 percentage points with 98% confidence if you use the point estimate obtained in part (a)?e) You wish to conduct your own study to determine the proportion of all customers who experienced an interruption in high-speed service during the previous month. What sample size would be needed for the estimate to be within 2 percentage points with 98% confidence if you don
Mathematics
1 answer:
Nastasia [14]1 year ago
7 0

Answer:

ill answer in a minute

Step-by-step explanation:

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Step-by-step explanation:

Yes, the statement is true "A state becomes good if its people are good". Government is one of the most important body for the good future of any country. The difference between a good and bad country occurs due to its government and governance. Similarly, citizens plays a vital role for the difference between good and bad state. The literacy rate of a state should be high for the sake of becoming good state.  A state becomes good if its people are good, as they are representative of the state.

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A dairy sells $3 and $5 ice creams. In one day they sell 50 ice creams earning a total of $180. How many of each type of ice cre
murzikaleks [220]
We are going to make simultaneous equations.
x will be our $3 ice cream and y will be our $5 ice cream

Equation1 ----            x + y = 50   (the sum of all the ice creams they sell)
Equation 2 ----          3x + 5y = 180  Sum of all the $3 and $5 ice creams is $180
Since we can't solve for both variables we will put one of the variables in terms of the other.
Take x+y=50 and subtract y from both sides.  (I could have done subtracted x - it did not matter).       Now we have x= ₋ y +50  (negative y +50)
Now I am going to take equation 2 and replace the x with -y +50

3 (-y +50) + 5y = 180   
Now I will use the distributive law on the 3 and what's in the parentheses:
-3y + 150 + 5y = 180
Now I will combine like terms (the -3y and the 5y)
2y + 150 = 180
Now subtract 150 from both sides of the equation
2y = 30
Divide both sides by 2
and get y= 15 They sold 15 ice creams that cost $5 each
Since equation 1  is  x+y=50 we can replace y with 15
x + 15 = 50    Now subtract 15 from both sides  x = 35
Since x represents the $3 ice creams, they sold 35 of those.
Check:
35 X 3 = $105
15 x 5  = +  <u>75
</u>               $180  

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I'm not quite sure but I believe the answer to your question is 4 sides
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Before a renovation, a movie theater had 111 seats. after the renovation, the theater has 144 seats. what is the approximate per
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Change in number of seats = 144 - 111 = 33

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Answer:

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