A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the drug company is currently producing has a normal distribution with an average of 7.4 minutes. The chemistry of the new anesthetic is such that the effective time should be normal with the same standard deviation, but the mean effective time may be lower. If it is lower, the drug company will market the new anesthetic; otherwise, they will continue to produce the older one. A hypothesis test will be done to help make the decision.

A sample of size 36 results in a sample mean of 7.1 and a sample std deviation of 1.2.

Complete the 5 step hypothesis test at significance level 0.10; make and support your decision.

Step 1: Null and alternate hypothesis (H0 and HA):

Step 2: Level of Significance:

Step 3: Statistics Test/Statistics to be used:

Step 4: Rejection Criteria (draw normal curve; identify rejection area; state critical t value)

Step 5: Calculate t statistic; determine p-value; make decision about H0

Answer:

B. $145.00

Step-by-step explanation:

4(x+15)= 640

or, 4x+60=640

or, 4x = 640-60

or, 4x = 580

or, x = 580/4

x= 145

Answer:

130.6 apporexiatly

Step-by-step explanation:

t years, s simple interest, r rate.

.

s(r/100+1)^t

.

x(1.07)^3 = 160

.

x = 130.6

Answer:

The answer is B you have to multiply each side 1120ft 3

Answer:

c. r=14

Step-by-step explanation:

r+36=50

subtract 36 from both sides

r+36-36=50-36

r=14

Answer:

1/4

Step-by-step explanation:

there are 4 colors meaning each one has a 1/4 chance

Answer:

A=12

Step-by-step explanation:

Answer:

3/4/7/x

Step-by-step explanation:

Answer:

Ok so use a ruler and draw out 3 1/4 length and 4 3/4 width and create it into a square.

Step-by-step explanation:

To find the area just multiply the lenght times width and you get 15.4375 or in fractions 247 /16

Answer:

5

Step-by-step explanation:

Given that :

Miles ridden in Tuesday = 10

Miles ridden on Wednesday = 20

Sample size, n = 2

Mean :

(10 + 20) / 2

= 30 /2

= 15

Mean absolute deviation :

(|10 - 15| + |20 - 15|) / 2

(5 + 5) / 2

10 / 2

= 5

The driver was unhappy because she crashed her vehicle and she strongly feels the farmer should be responsible for repairs.

Stopping distance can be defined as a measure of the distance between the time when a driver applies a break to stop a vehicle that is in motion and the time when the vehicle completely comes to a stop.

In this scenario, I would say that the driver is responsible for this accident because if she wasn't moving at a high speed, her stopping distance would be very minimal. Thus, she would be able to bring her vehicle to a stop without colliding with or crashing into the fence, immediately she sighted the cows.

Also, I can deduce that the driver was unhappy because she crashed her vehicle and she strongly feels the farmer should be responsible for repairs.

Read more on drivers here: https://brainly.com/question/26084890

Answer:

3

Step-by-step explanation:

We know that she uses one tank of gas every 375mi, so we can just divide.

1125 / 375 = 3

To check our work we can just multiply.

375 x 3 = 1125.

So she uses 3 tanks on the trip. I hope this helps :)

Answer:

I would add the two percentage up together and then time them by 1200 which gives 75,600 I will drop the zeros and the answer is 756

Answer:

$51

Step-by-step explanation:

Answer:

Por tanto, la raíz cuadrada de 100 es 10. 2. Elementos de la raíz. El número 36 es el cuadrado de 6.

Step-by-step explanation:

Answer:

0,7

Step-by-step explanation:

Have a nice day.

Answer:

(0, 7)

Step-by-step explanation:

You are looking for the point where the graph crosses the y-axis.  It looks like the point (0, 7)

Answer: D

Step-by-step explanation: Quadrant 3 i (negative, negative)

Answer:

[tex] (2m - 7)(4 {m}^{2} + 3)[/tex]

Step-by-step explanation:

[tex]8m^3 - 28m^2 + 6m - 21 \\ = 4 {m}^{2} (2 {m} - 7) + 3(2m - 7) \\ = (2m - 7)(4 {m}^{2} + 3)[/tex]

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Answer: The bumblebee is visiting flowest at around .3 minutes faster

Explanation:

2.714 is the unit rate for bumblebee

3 is the unit rate for butterfly

I hope this helped!

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- Zack Slocum

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Step-by-step explanation:

7.

[tex]180 - 2(50) = \\ = 180 - 100 = \\ = 80[/tex]

9.

[tex]180 - 100 = 80 \\(180 - 80) \div 2 = \\ = 100 \div 2 = 50[/tex]

Answer:

50

Step-by-step explanation:

[tex]7x = (90 + 5x) \times \frac{1}{2} [/tex]

[tex]7x = {2.5x} + 45[/tex]

[tex]4.5x = 45[/tex]

[tex]x = 10[/tex]

Plug 10 in for x.

[tex]5(10) = 50[/tex]

The measure of arc EC is 50. Exterior angle theorem is used in the given problem.

The sum of the exterior angles of a regular polygon with any number of sides equals 360°.

The exterior angle of a polygon is the angle of rotation between one extended side and its neighboring side, which is not extended.

Furthermore, because the polygon is regular, even though it has 'n' sides, all the outside angles have the same measure, and hence their measure is (360/n)°.

The measure of arc EC is found as;

[tex]\rm 7x = (90+5x)\times \frac{1}{2}\\\\ 7x=2.5x+45\\\\ 4.5 x=45 \\\\ x=10[/tex]

From the diagram,he EC is 5x . The measure of arc EC is;

EC=5x

EC=5×10

EC=50

Hence,the measure of arc EC will be 50.

Learn more about interior and exterior angles refer:

https://brainly.com/question/14173422

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Answer:

x=3

8*3+6=30

hope its right

Answer:

30

Step-by-step explanation:

So when they give us an anwser or a number that we can possibly plug in, its pretty simple. In our case we got the information that x=3. So if we ever see x in the expression, then we can plug in the information that they gave us into the expression. Let's view the expression, we can notice that there is once  x that's being multiplied with 8. And since x is 3 we can do 8x3 and then add the 6 so the expression will look like 8(3)+6 which you solve and get 30.

Answer:

C

Step-by-step explanation:

Test all of the coordinates given to you.

Starting with the X's. (because they are all positive, move to the right.)

Go right in the direction based on the number given

then go up or down for the Y's depending on the number given.

By following this, you will find that 3 of the solutions do not end up in the shaded area but one. 0,0 is the only solution that ends up in the orange area.

Answer:

$60

Step-by-step explanation:

sorry if I'm wrong ^-^

Answer:

its 46

Step-by-step explanation:

Answer:

What numbers are 1.2 and 1.4 on the number line? Huh?

Answer: No

Step-by-step explanation:

What we have to do is to substitute the values of x and y that we are given into the inequality:

x = 8

y = 7

y > 4x - 6

7 > 4(8) - 6

7 > 32 - 6

7 > 26

This is not true so it isn't a solution

Answer:

Answer and steps is in the picture.

Answer:

x = 38

Step-by-step explanation:

Here, we can use the area formula A = 0.5(Bh) to solve for x.

In this case, A = 399, B = x, and h = 21

[tex]399 = \frac{21}{2} x\\x = \frac{2*399}{21} \\x = 38[/tex]

Answer:

4/1 is the answer

Step-by-step explanation:

hope this helps