1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Drupady [299]
2 years ago
13

Dave’s Automatic Door, referred to in Exercise 29, installs automatic garage door openers. Based on a sample, following are the

times, in minutes, required to install 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.
Mathematics
1 answer:
HACTEHA [7]2 years ago
4 0

The question is not complete and the full question says;

Calculate the (a) range, (b) arithmetic mean, (c) mean deviation, and (d) interpret the values. Dave’s Automatic Door installs automatic garage door openers. The following list indicates the number of minutes needed to install a sample of 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.

Answer:

A) Range = 30 minutes

B) Mean = 38

C) Mean Deviation = 7.2

D) This is well written in the explanation.

Step-by-step explanation:

A) In statistics, Range = Largest value - Smallest value. From the question, the highest time is 54 minutes while the smallest time is 24 minutes.

Thus; Range = 54 - 24 = 30 minutes

B) In statistics,

Mean = Σx/n

Where n is the number of times occurring and Σx is the sum of all the times occurring

Thus,

Σx = 28 + 32 + 24 + 46 + 44 + 40 + 54 + 38 + 32 + 42 = 380

n = 10

Thus, Mean(x') = 380/10 = 38

C) Mean deviation is given as;

M.D = [Σ(x-x')]/n

Thus, Σ(x-x') = (28-38) + (32-38) + (24-38) + (46-38) + (44-38) + (40-38) + (54-38) + (38-38) + (32-38) + (42-38) = 72

So, M.D = 72/10 = 7.2

D) The range of the times is 30 minutes.

The average time required to open one door is 38 minutes.

The number of minutes the time deviates on average from the mean of 38 minutes is 7.2 minutes

You might be interested in
An artist uses different types of paper to create her masterpieces. She has shiny metallic paper and pink glittery paper. The sh
Naya [18.7K]

Answer:

it is 24 . Logically in my idea .

4 0
2 years ago
De cuántas maneras diferentes se puede vestir una persona; si cuenta con 3 camisas (2 iguales), 4 pantalones (2 iguales) y 6 par
UkoKoshka [18]

Answer:

d

Step-by-step explanation:

6 0
3 years ago
Choose two angles that are each separately alternate exterior angles with 412.
Alborosie

Answer:

∠2 and ∠5

Step-by-step explanation:

we know that

<u>Alternate Exterior Angles</u> are a pair of angles on the outer side of each of those two lines but on opposite sides of the transversal

In this problem

∠12 and ∠2 are alternate exterior angles

∠12 and ∠5 are alternate exterior angles

therefore

∠2 and ∠5 are each separately alternate exterior angles with ∠12

6 0
3 years ago
For (x)=3x+1 and g(x)=x^2 -6, find (f+g)(x)
julsineya [31]

Answer:

<h2>(f + g)(x) = x² + 3x - 5</h2>

Step-by-step explanation:

(f+g)(x)=f(x)+g(x)\\\\f(x)=3x+1;\ g(x)=x^2-6\\\\(f+g)(x)=(3x+1)+(x^2-6)=x^2+3x+1-6=x^2+3x-5

4 0
3 years ago
Which statement correctly describes the relationship between △JKL and △J′K′L′?
lana66690 [7]

Answer:

The is answer is the last one.

Step-by-step explanation:

I just took the test

4 0
3 years ago
Other questions:
  • When working with inequalities what do you do when its x squared &gt; 16 and vice versa does the sign flip.
    11·2 answers
  • A community bike ride offers 5.7 mile ride
    5·1 answer
  • Any suggestions or answers
    6·1 answer
  • Explain how to draw an area model to represent 2x15.
    14·1 answer
  • 4. What are the elements needed to prove similarity between two figures? Explain.
    6·1 answer
  • Which point on the number line could represent Negative 2 and one-fourth? A number line going from negative 5 to positive 5. Poi
    15·2 answers
  • Help asap do all show work
    13·1 answer
  • Given the function h(x) = x2 + x - 3, determine the average rate of change of the
    7·1 answer
  • Write the equation of the line given the two points. (1,-2) and (1,5)
    10·1 answer
  • Data were recorded for a car’s fuel efficiency, in miles per gallon (mpg), and corresponding speed, in miles per hour (mph). Sca
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!