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steposvetlana [31]
3 years ago
15

An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 2 of 2 : S

uppose a sample of 1496 new car buyers is drawn. Of those sampled, 478 preferred foreign over domestic cars. Using the data, construct the 90% confidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars. Round your answers to three decimal places.
Mathematics
1 answer:
Darya [45]3 years ago
4 0

Step-by-step explanation:

From given data,

n = 1496

x = 478

Proportion estimate ( p ) = \frac{x}{n}

                                        = \frac{478 }{1496} = 0.3195 ≅ 0.31

Proportion estimate ( p ) = 0.31

∴ The proportion of new car buyers who prefer foreign cars -> 0.31

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expeople1 [14]

9514 1404 393

Answer:

  9.6 kW

Step-by-step explanation:

The product of volts and amps is watts. Here, that product is ...

  (240 V)(40 A) = 9600 W

1000 W is 1 kW, so this quantity is 9.6 kW

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This tells the power consumption. The "rating" may be different.

3 0
2 years ago
4(5x - 2) = 72<br> What do I do
Pepsi [2]

Answer:

x = 4

Step-by-step explanation:

4(5x - 2) = 72

Do the distributive property

20x - 8 = 72

Then add 8 to both sides to get 20x alone

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20x = 80

Then divide both sides by 20 to get x

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6 0
3 years ago
Mary is going for a walk. She walks 12.5 miles in 5 hours. What is her speed
xz_007 [3.2K]

To find her speed, divide the total distance by the total time:

12.5 miles / 5 hours = 2.5 miles per hour.

3 0
3 years ago
Find the exact value by using a half-angle identity. . cos(5π/12).
vodka [1.7K]
<span>First of all in order to find the exact value by using a half angle identity we will do
cos(5π divided by 12)

=cos (5π divided by 6) divided by 2
= ± Under root[(1+cos (5π divided by 6) divided by 2]
Now we will consider + sign because 5π divided by 12 is in quadrant. where cos>0
so the solution is [(1- Under root 3 divided by 2) divided by 2] 
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6 0
3 years ago
The perimeter of a regular pentagon is represented by the expression 35d-25. Daryl correctly wrote expression to represent the o
Triss [41]

Answer:

Each one of the sides is equal to 7d-5

Step-by-step explanation:

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Each one of the sides is equal to 7d-5

6 0
2 years ago
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