Answer:
(1/5x)-6<99
not < the one with the line under it
Step-by-step explanation:
If the amount of time to prepare and deliver a pizza from MOD PIZZA is normally distributed with a mean of 20 minutes and standard deviation of 5 minutes.
Determine the percent of pizzas that were prepared and delivered:
(a) Between 20 and 25 minutes (b) In less than 18 minutes
( c ) If MOD PIZZA advertises that the Pizza is free if it takes more than 30 minutes to deliver, what percent of the pizza will be free?
I need to answer a,b and c - it is not mutiple choice. I also need to show all relevant steps and plus I really want to understand how to do this! I am completely stuck on this one and its due tonight. Please help!! :) Ill give badges, brainliest, thanks, all of that for whoever can help me!
Using the normal distribution, we have that:
a) 34.13% of pizzas were prepared and delivered between 20 and 25 minutes.
b) 34.46% of pizzas were prepared and delivered in less than 18 minutes.
c) 2.28% of the pizza will be free.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.The mean and the standard deviation are given, respectively, by:
[tex]\mu = 20, \sigma = 5[/tex]
For item a, the probability is the p-value of Z when X = 25 subtracted by the p-value of Z when X = 20, hence:
X = 25:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{25 - 20}{5}[/tex]
Z = 1
Z = 1 has a p-value of 0.8413.
X = 20:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{20 - 20}{5}[/tex]
Z = 0
Z = 0 has a p-value of 0.5.
0.8413 - 0.5 = 0.3413.
Hence 34.13% of pizzas were prepared and delivered between 20 and 25 minutes.
For item b, the probability is the p-value of Z when X = 18, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{18 - 20}{5}[/tex]
Z = -0.4
Z = -0.4 has a p-value of 0.3446.
34.46% of pizzas were prepared and delivered in less than 18 minutes.
For item c, the proportion is one subtracted by the p-value of Z when X = 30, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{30 - 20}{5}[/tex]
Z = 2
Z = 2 has a p-value of 0.9772.
1 - 0.9772 = 0.0228, hence 2.28% of the pizza will be free.
More can be learned about the normal distribution at https://brainly.com/question/28135235
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how can 20% = 1/5 find 20% of 50
Please help asap
Step-by-step explanation:
Hi,
Think about it this way.
20%
40%
60%
80%
100%
We had to add 20% 5 times in order to get 100%.
The same goes for the fraction.
1/5
2/5
3/5
4/5
5/5
We had to add 1/5 5 times to get it to 5/5.
So...
20% is the same thing as... 20/100 and simplified, it's the exact same thing as 1/5.
They're basically the same exact thing except they're written in different ways.
I hope this helps, I didn't really understand what you needed exactly, but if you need anything else, feel free to let me know :)
Have a wonderful day.
PLEASE QUICK I GIVE BRAINLIEST
How many elementary students are in this random sample? Use a numerical value as your answer.
Answer:
30 elementary students
Step-by-step explanation:
There are 13 households with 1 child
There are 11 households with 2 children
There are 4 households with 3 children
There is 1 household with 4 children
There are 0 households with 5 children
There is 1 household with 6 children
There are 0 households with 7 children
Therefore, there's a total of 13+11+4+1+0+1+0=30 elementary students
Lucy is painting one wall in her bedroom. The wall measures 13 feet long and 9 feet wide. If one can of paint covers 50 square feet will it be enough?
Name a pair of adjacent supplementary angles.
Answer:
angle. LJK and angle. LJN
Emily buys a pack of 12 bottles of water
neddddd helpp plzzz really asap
Answer:
2(x+3)hope it helps.
stay safe healthy and happy.Answer:
2*x3
Step-by-step explanation:
* mean's tims
There are 24 events at an indoor track and field meet. The ratio of track events to field events is 7:5. How many of the events are track event
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what's the common factor of 3 8 2 and 5
Answer:
1
Step-by-step explanation:
Rewrite the equation below so that it does not have fractions. 4/9x-2=5/6
Answer:
0.44x-2=0.83
Step-by-step explanation:
Question 1
The value of all accounts investments and things that you own
1. Assets
2. Money
3. Net Worth
4. Liabilities
Can anyone help please? Just a quick answer or explain it.
Answer:
B
Step-by-step explanation:
mrk brainliest plz
Need help with this question. I know a is yes, b and c I don’t know, and c is yes.
Answer:isk
Step-by-step explanation:
The perimeter of the traingle below is 8x-6
What is the measure angle of 3
PLEASE HELP WORTH 10 points
Answer:
Step-by-step explanation:
the third angle = 90 -61 = 29
hope that helps
A flowerpot has a circular base with a diameter of 27 centimeters. Find the circumference of the base of the flowerpot. Round to the nearest tenth.
How would you go about solving this?
The circumference of the base of the flowerpot is 84.8cm
What is circumference of a circle?Circumference of a circle can be described as the length or distance of a circle.
The formular that can be used to calculate the circumference of a circle is
= 2πr
Radius= diameter/2
= 27/2
= 13.5
The circumference can be calculated as follows
= 2πr
= 2 × 3.142 × 13.5
= 84.83
≅ 84.8 (to the nearest tenth)
Hence the circumference of the base of the flower pot is 84.8 cm
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Four times a number, added to the sum of the number and five
Answer:
4X+(X+5)
Step-by-step explanation:
I got this correct on a test
Answer:
(4 x X) + X + 5
Step-by-step explanation:
Is your algebra expression.
For a new neighbor, 1 acre of land will be split into 5 lots.How many acres of land will be in each lot.
if the area of a wall is 36 square meters, what is the perimeter?
Answer:
18
Step-by-step explanation:
it is 18 because you would 36 divided by 4 to get 9. Then you would do 9 plus 6 to get the answer 18
What is the area of square B?
Answer:
30
Step-by-step explanation:
B is not a square, it’s a rectangle. It has a area of 5x6=30 cm^2
What is the perimeter of the shape below
Answer:
Show the shape.
Step-by-step explanation:
Answer:
You didn't attach any work.
Events A and B are mutually exclusive. Events B and C are non-mutually exclusive. Which Venn diagram could represent this description? Circles A, B, and C overlap. Circles A and B overlap. Circle C is to the side. Circles A, B, and C are shown. They do not overlap. Circles A and C overlap, and circles C and B overlap.
Answer:
correct its d
Step-by-step explanation:
I WILL GIVE Brainiest IF YOUR RIGHT
Answer:
answer: 60
Hope that helps!
Answer:
G. 60 m²
Step-by-step explanation:
The lawn is in the shape of a trapezium.
The area of a trapezium can be found using the equation 0.5*h*(a+b), where h is the height and a and b are the top and bottom of the shape.
Area = 0.5*h*(a+b)
= 0.5*4*(12+18)
= 60 m²
Zoey purchased a new car in 1992 for \$28,000$28,000. The value of the car has been depreciating exponentially at a constant rate. If the value of the car was \$9,600$9,600 in the year 1996, then what would be the predicted value of the car in the year 1998, to the nearest dollar?
The predicted value of the car in the year 1998, will be 400$
What is depreciation?
The decrease in the value of any product over a period of time is called depreciation.
In 1992, the price is 28000$ and 9600$ in 1996 so in 4 years the value the car lost is 18400$
Dividing 18400 by 4 years we get 4600 depreciation value per year.
Between 1996 and 1998 there is 2 years
So in 1998, the value of the car will be:
9600 (value in 1996) - 2 x 4600 = 400$
Therefore the predicted value of the car in the year 1998, will be 400$
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Pls help me ASAP pls
Answer:
[tex]y = \sqrt[5]{50} [/tex]
Step-by-step explanation:
[tex]25 + 25 = {y}^{5} [/tex]
[tex] {y}^{5} = 25 + 25[/tex]
[tex] {y}^{5} = 50[/tex]
Take the 5th root of both sides of the equation to eliminate the exponent on the left side.
[tex]y = \sqrt[5]{50} [/tex]
Hope it is helpful.....The Jones brother, Carl, Cameron, and Carlos, are painters. Together they can paint a standard sized room in 2 hours. If Carl is alone on the job he can paint the room in 5 hours. If Cameron is alone he can paint the room in 6 hours.
Answer: Best anwser 5.5
Step-by-step explanation:
Using the graph as your guide, complete the following statement,
The discriminant of the function is
A. positive
B. negative
C. zero
Answer:
A positive
Step-by-step explanation:
hope this helps
Answer:
positive
Step-by-step explanation:
Find an
angle 0 coterminal to -1032°, where 0°
Delta math
you will find the answer in tube
Select all that apply.
Select the real words which can be formed with pass.
passable
passage
passdom
passen
passing
passly
Answer:
passable
passage
passing
Answer:
passable, passage, passing
Step-by-step explanation:
passable is a word
passage is a word
passdom isn't a word
passen isn't a word
passing is a word
passly isn't a word