A consumer group studied two different manufacturers of cars, J and K, to investigate differences in gas
mileage for cars made by the two manufacturers. For a similar type of car, a random sample of 15 cars
from J and a random sample of 12 cars from K were selected, and the gas mileages, in miles per gallon
(mpg), were recorded. The difference in the sample mean gas mileages was used to construct the 90
percent confidence interval (3.5,5.7).
Assuming all conditions for inference were met, which of the following is a correct interpretation of the
interval?
А
The probability is 0.90 that the difference in sample means for gas mileage for the two
car manufacturers is between 3.5 mpg and 5.7 mpg
B
The probability is 0.90 that the population mean difference in gas mileage for the two car
manufacturers is between 3.5 mpg and 5.7 mpg
About 90 percent of the differences in gas mileage for the two car manufacturers are
between 3.5 mpg and 5.7 mpg.
D
We are 90 percent confident that the difference in sample means for gas mileage for the
two car manufacturers is between 3.5 mpg and 5.7 mpg.
E
We are 90 percent confident that the population mean difference of gas mileage for the
two car manufacturers is between 3.5 mpg and 5.7 mpg.

Answer:

Step-by-step explanation:

1. Bar graph.

2. fewer

3. more

Hope that helps!

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

Step-by-step explanation:

[tex]( \: n - 1) \times (n + 1) \times \: ( {n }^{ 2 - 2)} [/tex]

Answer:

1/3

Step-by-step explanation:

2/6 divided by 2/2 equals 1/3.

Explanation: You have to find the common factor the numerator and denominator share.

Have A Great Day! :)

Step-by-step explanation:

Write an inequality of the form x > c or x < c to represent a constraint or condition in a real-world or mathematical problem. Recognize that inequalities of the form x > c or x < c have infinitely many solutions; represent solutions of such inequalities on number line diagrams.

Question:

A customer buys bouquets of tulips and bouquets of roses for $40.25. The bouquet contained 17 tulips and cost $18.25. What is the price of a bouquet of roses?

Answer:

[tex]Rose =\$22.00[/tex]

Step-by-step explanation:

Given

[tex]Total = \$40.25[/tex]

[tex]Tulips = \$18.25[/tex]

Required

The cost of a bouquet of roses

Since the customer bought a bouquet each, the formula to use is:

[tex]Total = Tulip + Rose[/tex]

Make Rose the subject

[tex]Rose =Total - Tulip[/tex]

[tex]Rose =\$40.25 - \$18.25[/tex]

[tex]Rose =\$22.00[/tex]

A bouquet of rose costs $22.00

Answer:

B) -34.5 < x

---

Hope this helps!

Answer:

The correct answer is A

Step-by-step explanation:

Answer: group A: The organic drain cleaners claim to be more effective than the soap solution is reducing the development of clogs is false.

group B: The organic drain cleaners claim to

be more effective than the soap solution in reducing the development of clogs is true

group C: There is not enough information to invalidate the claim of the organic drain cleaner

Step-by-step explanation:

plato/edmentum

Answer:

Group A - The organic drain cleaner’s claim to be more effective than the soap solution in reducing the development of clogs is false.

Group B - The organic drain cleaner’s claim to be more effective than the soap solution in reducing the development of clogs is true.

Group C - There is not enough information to validate or invalidate the claim of the organic drain cleaner.

Step-by-step explanation:

Plato/Edmentum

Answer: you got the two right, the third is incorrect and the fourth is correct

Step-by-step explanation: I took the quiz hope I pulled some weights off your shoulders

Answer:

Probability = 0.119

Step-by-step explanation:

P (Coronavirus) = P(Person online & corona) or P(Person offline & corona)

(0.70 x 0.02) + (0.30 x 0.35)

0.014 + 0.105

0.119

Answer:

D: the wiring and the other

Step-by-step explanation:

Answer:

The liquid and the medal

Step-by-step explanation: "So the electrons start to move from one metal to the other through the liquid. This creates current" This is why i would check the liquid and the medal. if the experiemnt doesnt work then there must be something wrong with the current

Answer and Step-by-step explanation:

The independent variable is m, and the dependent variable is h.

This is because you can plug in any value for m, making m NOT have to depend on any other value to become m.

With h, it needs the result of m and its other values to become the result of h. H relies/depends on the values in the equation to become a value.

#teamtrees #PAW (Plant And Water)

Answer:

22 Dimes

Step-by-step explanation:

Answer:

A. V = ⅓(½×3×4)9

Step-by-step explanation:

Volume of triangular pyramid = ⅓(Base area)height

Base area = ½×b×h

b = 3 cm

h = 4 cm

Base area = ½×3×4

Height of prism = 9 cm

Plug in the values

Volume = ⅓(½×3×4)9

Answer:

The total cost of meal is $65.34

Step-by-step explanation:

Price of the meal = $54

Sales tax on meal = 6%

Tip given= 15% on pre-tax amount

We need to find total cost of meal.

First finding sales tax amount:

We need to calculate 6% of 54



So, the sales tax would be $3.24

Now, we need to find tip amount

We will find 15% of 54



So, the tip given would be $8.1

The total cost of meal = Price of meal + Sales Tax + Tip

                                      = 54+3.24+8.1

                                      = 65.34

So, the total cost of meal is $65.34

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Answer:

Step-by-step explanation:

Rewrite second number as the reciprocal and as a multiplication

2/3 * 4/1 = 8/3

Final Answer: 2  2/3

Answer:

The difference in elevation between Laguna del Carbon and El Alto is 12,656 feet.

Step-by-step explanation:

Given that Laguna del carbon, a salt lake located in Argentina, lies 344 feet below sea level, while El Alto, Bolivia, is located approximately 13,000 feet above sea level, to determine what is the difference in elevation between Laguna del Carbon and El Alto, the following calculation must be performed:

13,000 - 344 = X

12.656 = X

Thus, the difference in elevation between Laguna del Carbon and El Alto is 12,656 feet.

Answer:

The Lowest place above sea level in the Americans.

Step-by-step explanation:

I took the k12 Test

Answer:

the remaining points either be (-3,-3) or (1,2)

Answer: 5

Step-by-step explanation: Its simple counting btw

Answer:

Bad quality

Step-by-step explanation:

oof cant see the words 0__0

Answer:

The confidence interval will be given by:

[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.

For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In the context of this problems:

It means that the sampling distributions of the sample mean of 500 components will be approximated normal, with mean 200,000 and standard deviation [tex]s = \frac{1000}{\sqrt{500}} = 44.72[/tex]

To build the confidence interval:

The confidence interval for the average length of life of the electronic components they produced will be given by:

[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.

For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]

Answer:

√3= [tex]\sqrt[2]{3}[/tex]=[tex]3^{\frac{1}{2} }[/tex]

x+1=1/2

x=1/2-2/2=[tex]\frac{-1}{2}[/tex]

Step-by-step explanation:

Hope it helps!

Answer:

yes 8/15 is greater and 2/3 is less than

Answer:

The answer is (-4,9)

Step-by-step explanation:

When you reflect across y=-x the x and y coordinates switch places and change signs.

We know that sin (2x) = 2 sinxcosx.

So, sin (2x) + sin (x) - 2 becomes

2sin xcosx + sinx- 2.

Factor out sinx.

sinx(2cosx + 1 - 2)

sinx(2cosx - 1)

Answer:

The sum is 12.5

Step-by-step explanation:

Answer:

1. C

2. B

3. A

4. D

5. B

6. C

7. B

8. C

9. C

10. B

11. A

12. D

13. B

14. A

15. A

Step-by-step explanation:

Connexus Sequences and Series Online Practice

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