Service time for a customer coming through a checkout counter in a retail store is a random variable with the mean of minutes and standard deviation of minutes. Suppose that the distribution of service time is fairly close to a normal distribution. Suppose there are two counters in a store, customers in the first line and customers in the second line. Find the probability that the difference between the mean service time for the shorter line and the mean service time for the longer one is more than minutes. Assume that the service times for each customer can be regarded as independent random variables. Round your answer to two decimal places (e.g. 98.76).

Answers

Answer 1

Answer:h

Step-by-step explanation:


Related Questions

Find the measure of arc ZY

Answers

Answer:

142

Step-by-step explanation:

8a-9=7a+1

a=10

7(10)+1=71

71x2=142

A rectangular prism has a width of x^2 inches, A length of xy^2 inches, and a height of y^2 inches. Which expression represents the volume in cubic inches of this rectangular prism

Answers

Answer:

[tex]Volume = x^3y^4[/tex]

Step-by-step explanation:

Given

[tex]Length = xy^2[/tex]

[tex]Height = y^2[/tex]

[tex]Width = x^2[/tex]

Required

Determine the volume

The volume is calculated as:

[tex]Volume = Length * Width * Height[/tex]

[tex]Volume = xy^2 * x^2 * y^2[/tex]

This gives:

[tex]Volume = x^3y^4[/tex]

Decide whether or not it is a function. ​

Answers

Answer:

function

Step-by-step explanation:

we see 2 sets of values : for x and for y.

the set for x is {8, 0, -1, 9}

the set for y is {s, u, k, d}

for every element of set x there is an associated element of set y.

that is a function of x.

Solve for x

I don’t have much time pls help. Round to the nearest hundredth

Answers

tan37=x:31
x=31*tan37
x=23.36

(9 × 23) × 23 =

please help me

Answers

the answer is 4761 please give brainliest :))

Answer:

4761

Step-by-step explanation:

PEMDAS

Sharmila had 5/6 portion of the cake. She gave 2/6 portion of the whole cake to

her brother, then how much cake will remain with her?​

Answers

Answer: [tex]\dfrac{3}{6}[/tex]

Step-by-step explanation:

Given

Sharmila has [tex]\frac{5}{6}[/tex] portion of cake

she gave [tex]\frac{2}{6}[/tex] portion to her brother

The remaining cake is given by

[tex]\Rightarrow \dfrac{5}{6}-\dfrac{2}{6}=\dfrac{5-2}{6}\\\\\Rightarrow \dfrac{3}{6}[/tex]

i.e. [tex]\frac{3}{6}[/tex] portion of cake will remain with her

Find the value of X
The answer will be a decimal

Answers

Answer:

9.465

Step-by-step explanation:

cos 65°=4/x

x=4/cos 65°=9.465(correct to three decimal places)

Please help




34 is what percent of 150​

Answers

Answer:

The answer i Think is 22.67%

PLEASE HELP
ASAPPPPPP
Which of the following segments is a diameter of O?A. OD
B. DB
C. АС
D. AB

Answers

Answer:

AB is the diameter,,,,,,,,,

Please! I’ll reward brainiest

Answers

Answer:

The second one is correct

Step-by-step explanation:

....

Answer:

204.217

Step-by-step explanation:

2 x .01 = .02

.02 + 204.197 =  204.217

What is the base in the given problem? The 20% of 35 boys in the class which is 7, wear eyeglasses.

Answers

Answer:

the base of the given problem is 7

Step-by-step explanation:

The computation of the base in the given problem is shown below:

Given that

20% of 35 boys in the class wear eyeclasses

So if we solve this

The value would be

= 20% of 35 boys

= 20% × 35

= 7

Hence, the base of the given problem is 7

The same would be considered

Khadija is saving money to buy a game. So far she has saved $8 , which is one-fourth of the total cost of the game. How much does the game cost?

Answers

1/4=8 1/2=16 1/1=32 :)

Factorise the following.​

Answers

Answer:

iii. (l + m - n)(l - m + n)

vi. (5a -b) ( 5b - a)

Step-by-step explanation:

iii. l² - (m - n)²

= (l + m - n)(l - m + n)

vi. 4(a+b)² - 9(a-b)²

= (2(a+b))² - (3(a-b))²

= (2(a+b) + 3(a-b)) (2(a+b) - 3(a-b))

= (2a+2b + 3a - 3b) (2a+2b - 3a + 3b)

= (5a -b) ( 5b - a)

Q. 1) l²- (m - n)²

=(l - m + n)(l + m - n)

Q.2) 4(a+b)²- 9(a-b)²

= [(2(a+b))²- (3(a-b))²]

=[2(a+b)+3(a-b)][ 2(a+b)-3(a-b)]

=[2a+2b+3a-3b][2a+2b-3a+3b]

=[5a-b][5b-a] ]

Which of these is something you can pay for with the money in a savings account?

Answers

College is the correct answer

Find the value of x and y in the diagram below.
30°
X
y
7
= 7V5, y = 14
B. X= 14, y = 2V3
A. =
C. X=
73
-3.y=14.3
D. x= 14./2,8-73
3

Answers

Answer:

Its D

Step-by-step explanation:

HEEEELP WILL GIVE BRAINLIEST

Answers

Answer:

Yes

Step-by-step explanation:

3/6 = 12/24

Answer:

Yes!

Step-by-step explanation:

It can be also written as:

3                   6

_      =          _

12                 24

3x2 =6

you multiplied 3 by 2, so do the same to the bottom!

12x2=24

So, this is right!

Each figure shows a triangle with one or more of its medians, help me pleaseee ASAP:(

Answers

Answer:

19. RE = 12

20. EB = 24

Step-by-step explanation:

19. Determination of RE

HE = 24

RE =?

From the diagram given above, we can conclude that:

HE = 2RE

24 = 2RE

Divide both side by 2

RE = 24 / 2

RE = 12

20. Determination of EB.

YB = 12

EB =.?

From the diagram given above, we can conclude that:

EB = YB

EB = 2 × 12

EB = 24

The area is about? SOMONE HELP I’m so confused please please help

Answers

A= πr2

= 22/7×14×14

=616 mm2

What fraction of the dogs shown in
Conyers was terriers?
retrievers = 1/2
Dalmatians = 1/4
Poodles = 1/8
Terriers =

Answers

2/14 just add the numerators and denomentators

What is the value of
k
when n = 64 and k = 2?
nk

Answers

Answer:

128

Step-by-step explanation:

64 times 2 = 128

The value of the expression nk at n = 64 and k = 2 will be 128.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The expression is given below.

⇒ nk

The value of the expression at n = 64 and k = 2 will be given as,

⇒ 64 × 2

⇒ 128

The value of the expression nk at n = 64 and k = 2 will be 128.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

double the sum of a number and 3​

Answers

Hey there!

Your answer is 2(n + 3)

"Double" represents multiplying by two. Also, "sum of a number and 3" represents the addition of 3 and a number, so we could put "n + 3". Since we are doubling the sum, it would be "2(n + 3)"

Have a terrificly amazing day! :D

2(x+3)

Explanation:

Sum= +
Twice= multiply
So, you find the sum and multiply it by 2

find the value of x

thank u so much

Answers

Answer:

x= 100

Step-by-step explanation:

The opposite angles in a cyclic quadrilateral are supplementary.

80+x = 180

x = 180-80

Answer:

x = 100

Step-by-step explanation:

The opposite angles in a cyclic quadrilateral are supplementary, then

x + 80 = 180 ( subtract 80 from both sides )

x = 100

what is the digit in the thousandths place in the decimal number 1.2478

Answers

Answer:

7

Step-by-step explanation:

2 - tenths

4 - hundredths

7- thousandths

8 - ten-thousandths

Step-by-step explanation:

digit 7 is in the thousandths place

100 BRAINLY POINTS
f(x)=18,000(1-0.012)^x ; x represents the number of years since the car started to depreciate and 18,000 = the initial value of the car. What year will you recieve the car when the car value drops below $2,000? Please do a step by step

Answers

Answer:

Given

f(x)=18,000(.88)^x

We need to find the value of x when f(x) <2000

2000 = 18000(0.88)^x

0.88^x 2000/18000

0.88^x 1/9

• x = log (1/9) / log (0.88)

• x= 17 (rounded down)

After 17 years or during year 18 the car value will drop below $2000

Yuki bought a pound of confetti for $ 12. What is the price, in dollars, per ounce of confetti? There are 16 ounces in 1 pound.

Answers

It’s 192. You had to multiply 12 x 16. Which you get 192. You have 12 pounds, and 1 is 16 ounces. So you have to multiply
It’s 192 dollars per ounce

i got a question where it gave the slope of -1/2 and a point of (-10,3) i need to find the equation of the line

Answers

9514 1404 393

Answer:

  y -3 = -1/2(x +10)

Step-by-step explanation:

Given a point and a slope, it is reasonable to use the point-slope form of the equation for a line.

  y -k = m(x -h) . . . . . . . . line with slope m through point (h, k)

Your line has slope m = -1/2 through point (h, k) = (-10, 3). Putting these values into the appropriate form your equation is ...

  y -3 = -1/2(x +10) . . . . point-slope form equation

__

  y = -1/2x -5 +3 . . . . eliminate parentheses, add 3

  y = -1/2x -2 . . . . . . . . . slope-intercept form equation

What are the zeros of this function?
- 10
10
- 10 -
O A. x = 0 and x = -6
OB. X = 2 and x = -6
O C. x = 0 and x = 5
O D. x = 0 and x = -5

Answers

Answer: c

Step-by-step explanation:

The zeros of the given function shown in the graph are x = 0 and x = 5. Option C is correct.

What are the zeros of equations?

Zeros of an equation is defined as the value of the independent variable where the equation or function gives zero.

Here,

To calculate the zeros of a function from a graph, you need to identify the points where the graph intersects the x-axis. The x-values of these points of intersection are the zeros of the function.

Based on the graph provided, it can be concluded that the zeros of the function occur at x = 0 and x = 5, and therefore, option C is the correct answer.

Learn more about zero of a function here:

https://brainly.com/question/12431044

#SPJ7

giving brainliest !! *easy*

Answers

Answer:

25

Step-by-step explanation:

25

Please help with my math I'm begging
(Multiple choice) 2 questions

Answers

Answer:

1) d answer 2) c answer of the question

find the equation of the exponential function represented by the table below : X Y
0. 0.02
1. 0.04
2. 0.08
3 0.16

Answers

Answer:

f(x) = 0.01 × 2^(x+1)

Step-by-step explanation:

0.02 = 0.01 × 2¹

0.04 = 0.01 × 2²

0.08 = 0.01 × 2³

0.16 = 0.01 × 2⁴

The equation of the exponential function is [tex]f(x) = 0.01 \times 2^{x+1}[/tex].

What are exponential functions?

When the expression of function is such that it involves the input to be present as exponent (power) of some constant, then such function is called exponential function. There usual form is specified below. They are written in several such equivalent forms.

The equation in exponential form

y = A(Bˣ)

Since we are given as;[tex]f(x) = 0.01 \times 2^{x+1}[/tex]

Case 1 :

x =0, y = 0.02

0.02 =  A (B⁰)

A = 0.02

Case 2:

x = 1, y =0.04

0.04 =  0.02(B)

0.04 /0.02 = B

B = 2

Case 3 :

x = 2, y =0.08

0.08 = 0.02(2²)

0.08 = 0.08

Case 4 :

x = 3, y = 0.16

0.16 = 0.02(2³)

0.16 = 0.16

Learn more about equations here;

https://brainly.com/question/25180086

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