Suppose the waiting times in an emergency room are normally distributed with a mean (mean) of 40 and a standard deviation (sigma) of 10. A random sample of 25 persons waiting in the ER is selected. What is the probability that their average waiting time will be between 38 and 42 minutes

Answer:

0

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Answer:

4.6

Step-by-step explanation:

Answer:

4.6

Step-by-step explanation:

1. We assume, that the number 4 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 4 is 100%, so we can write it down as 4=100%.

4. We know, that x is 115% of the output value, so we can write it down as x=115%.

5. Now we have two simple equations:

1) 4=100%

2) x=115%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

4/x=100%/115%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 115% of 4

4/x=100/115

(4/x)*x=(100/115)*x       - we multiply both sides of the equation by x

4=0.8695652173913*x       - we divide both sides of the equation by (0.8695652173913) to get x

4/0.8695652173913=x

4.6=x

x=4.6

now we have:

115% of 4=4.6

Answer: not true

Step-by-step explanation: :) Yay

Step-by-step explanation:

Graphing them is the best way to tell (I put one from Desmos in th attachment scribbled on it a little to match our situation). Otherwise you'll just have to know which one is going to be where on the interval given; but that knowledge comes by graphing them a lot anyways.

Also remember to draw your strips/lines from the axis of revolution to the curves. The longer one will represent the outer radius of the volume and the shorter one the inner radius.

So:

Comment with any questions.

Answer:

v= -1 (BRAINLIEST PLEASE)

Step-by-step explanation:

|v+8| -5=2

Add 5 to each side

|v+8| -5=2

      +5= +5

Now you have |v+8|= 7

So what plus 8 equals 7?

-1

so now you have |-1+8| which is 7

so v= -1

Answer: Skewed left, no outlier

Step-by-step explanation: You use the IQR and quartile 1&3 to find the number that defines an outlier. And for this one there are none

Answer:

-9

Step-by-step explanation:

Unit rate is a ratio between two different units with a denominator of one. When we divide a fraction's numerator by its denominator, the result is a value in decimal form. For example: 8/4 = 2 and 3/6 = 0.5. When we write numbers in decimal form, we can write them as a ratio with one as the denominator.

For example, we can write 2 as 2/1, and 0.5 as 0.5/1. However, since that approach can be a little clumsy, we usually drop the one. That said, it's important to remember the one is there, especially when working with unit rates.

For instance, 8 miles/4 hours = 2 miles/hour. Notice again that, while we did not include the 1, we did include the unit 'hour' Miles per hour is a familiar expression, as are unit rates such as:

interest/amount invested

revolutions/minute

salary/year

Conversationally, the word ''per'' indicates we are using a unit rate.

Answer:

answer is 16

follow me!

Answer:16

Step-by-step explanation: first we multiply 4*4 and then 2*2 divide them which equals 4 then we add 2 then multiply by 2 and add 4 and we get 16

Answer:

it is a rational number

Step-by-step explanation:

Answer: Choice D

(a-e)/f

=======================================

Explanation:

Points D and B are at locations (e,f) and (a,0) respectively.

Find the slope of line DB to get

m = (y2-y1)/(x2-x1)

m = (0-f)/(a-e)

m = -f/(a-e)

This is the slope of line DB. We want the perpendicular slope to this line. So we'll flip the fraction to get -(a-e)/f and then flip the sign from negative to positive. That leads to the final answer (a-e)/f.

Another example would be an original slope of -2/5 has a perpendicular slope of 5/2. Notice how the two slopes -2/5 and 5/2 multiply to -1. This is true of any pair of perpendicular lines where neither line is vertical.

Answer:

-5

Step-by-step explanation:

You have to subtract 3 and 7 which gives you -4 but since it's absolute value it becomes positive 4. The 9 stays as a positive 9. Then, you subtract 4 and 9 which gives you -5.

Answer:

-5

Step-by-step explanation:

|3-7| - |9| =|-4|-|9| =4-9 =-5

Answer:

Step-by-step explanation:

( f . g) (x)  is the "product" of functions f(x) and g(x):

                      1

( f . g) (x) = ------- * √(x - 2)

                   x^2

or:

                   √(x - 2)  

( f . g) (x) = ------------

                     x^2

Reggie travels 300 km an hour

Answer:

20,29

Step-by-step explanation:

Answer:

21, 34

Step-by-step explanation:

1+1 is 2, 1+2 is 3, 2+3 is 5, 5+8 is 13 ext....

Answer:

25

Step-by-step explanation:

Given:

n = 33

e = 7

Basically n is the product of p and q

The value of n is given as 33

e is a value chosen such that e , 1<e<ϕ, and that gcd (e,ϕ)

Here the value of e is given as 7

The text/number to be encrypted is also given that is 16

So this means we have to compute the cipher text

We use the following formula from RSA algorithm to compute encrypt number 16. Lets say m = 16

[tex]c=m^{e} mod[/tex] [tex]n[/tex]

Here

e = 7

m = 16

n = 33

So putting in the values:

c = 16⁷ mod 33

  = 268435456 mod 33

  = 25     use modulo operator

c = 25

So the encrypted number is 25

The encrypted number is 25 and this can be determined by using the formula from RSA algorithm.

Given :

Alice has shared that her RSA public key is n = = 33, e = 7.

The formula from the RSA algorithm is used to encrypt the number 16. The formula is given by:

[tex]\rm c=m^e\;mod \;n[/tex]

where e = 7, n = 33 and m = 16.

Now, substitute the known values in the above equation.

[tex]\rm c=16^7\; mod \;33[/tex]

[tex]\rm c = 268435456\; mod \;33[/tex]

Now, by using the modulo function the above expression becomes:

c = 25

So, the encrypted number is 25.

For more information, refer to the link given below:

https://brainly.com/question/22687297

Answer:

90

Step-by-step explanation:

9^2  +  3^2  equals:

81     +  9    = 90

Answer:

Step-by-step explanation:

D

a value of x cannot give two or more values of y.

Answer:C

Step-by-step explanation:because 19 has two y

Answer:

a) Rating Frequency Percent Frequency

Excellent 18 ___36%____Very Good 25 ___50%____Good 4 ___8%____Fair 1   2% Poor 2  4%  Total 50 100 What do these summaries indicate about the overall customer satisfaction with the Delta flight? ____94%______ % customers are satisfied with the Delta Flight Et either a good, very good, or excellent rating. Only ____6%_______% of customers rated the Delta flight Fair or Poor.

b. The online survey questionnaire enabled respondents to explain any aspect of the flight that Failed to meet expectations. Would this be helpful information to a manager looking for ways to improve the overall customer satisfaction on Delta flights? Explain.

Allowing survey respondents to explain their 5-point scale responses would provide helpful information to managers looking for ways to improve customer satisfaction on Delta flights. The ____6______% respondents indicating that the flight failed to meet expectations would have the opportunity to provide detailed information about their expectations.

Step-by-step explanation:

a) Data and Calculations:

                  Rating Frequency     Percent Frequency

Excellent                18                       ____36%___

Very Good            25                       ____50%___

Good                       4                       ____  8%___

Fair                          1                        ____  2%___

Poor                        2                       _____4% __

Total                     50                               100%

b) Percentage Frequencies are obtained as follows:

Excellent = 18/50 * 100 = 36%

Very Good = 25/50 * 100 = 50%

Good = 4/50 * 100 = 8%

Fair = 1/50 * 100 = 2%

Poor = 2/50 * 100 = 4%

c) Good, very good, and excellent = 47/50 * 100 = 94%

d) Fair or Poor rating = 3/50 * 100 = 6%

e) Moreover, dissatisfied customers can be sources of great information on the performance of a good or service.  Though, with only 6% of customers giving a dissatisfaction rating with the Delta flights, it is still important to dive deep to unearth the reasons for their dissatisfaction as this may provide valuable information to improve the services.  Usually, this class of customers is the most sincere in most cases, unless their dissatisfaction can be proved to be attitudinal on their own part.

Answer:

50%

Step-by-step explanation:

Five out of 10 is 50%

Answer:

50%

Step-by-step explanation:

If there are 5 out of 10 marbles that are red, then there are [tex]10-5 =5[/tex] marbles that aren't red.

This makes the fraction [tex]\frac{5}{10}[/tex]. Converting a fraction to a percent is simple - divide the numerator by the denominator and multiply by 100.

[tex]5 \div 10 = 0.5\\\\0.5 \cdot 100 = 50[/tex]

So 50% of the marbles aren't red.

Hope this helped!

Answer:

x=9 or -3

Step-by-step explanation:

used quadratic formula

standard form: ax^2 + bx +c

quadratic formula:

x= -b +- square root of b^2 -4(a)(c) divided by 2(a)

Google quadratic equation for more

Answer:

G

Step-by-step explanation:

It is g as it is directly in the middle of the points

Answer: y = 0, 5/12

Step-by-step explanation:

(y)(12y-5) = 0

12y^2 - 5y = 0

After factoring:

y(12y - 5) = 0

Therefore,

y = 0 OR y = 5/12

Answer:

31 in the perimeter

Step-by-step explanation:

Answer:

(6,3)

Step-by-step explanation:

One way you can do it is by using an coordinate grid or doing the x values of C-B which will give you 5 and x values of A+B which is 2. Them multiply 5*2= 10

[tex]\text{Hey there!}[/tex]

[tex]\text{In order for us solve for this equation we have to divide 125 by 12.125}[/tex]

[tex]\bf{\dfrac{125}{28.215} = 4.44444}[/tex]

[tex]\text{Thus your answer is: 4.44444}[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{LoveYourselfFirst:)}[/tex]