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
drek231 [11]
3 years ago
15

The National Football League (NFL) polls fans to develop a rating for each football game (NFL website, October 24, 2012). Each g

ame is rated on a scale from (forgettable) to (memorable). The fan ratings for a random sample of games follow. Excel File: data07-11.xlsx a. Develop a point estimate of mean fan rating for the population of NFL games. b. Develop a point estimate of the standard deviation for the population of NFL games (to 4 decimals).

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

This question is incomplete, in that the Excel File: data07-11.xlsx a. was not provided, but I was able to get the information on the Excel File: data07-11.xlsx a. from google as below:

57 61 86 74 72 73

20 57 80 79 83 74

The image of the Excel File: data07-11.xlsx a. is also attached below.

Answer:

a) Point estimate of sample mean  = 68

b) Point estimate of standard deviation (4 decimals) = 17.8122

Step-by-step explanation:

a) Point estimate of sample mean, \bar{x}  =  ∑Xi / n = (57 + 61 + 85 + 74 + 73 + 72 + 20 + 58 + 81 + 78 + 84 + 73)/12 = 68

b) Point estimate of standard deviation = sqrt ∑ Xi² - n\bar{x}² / n-1)

= sqrt(((57 - 68)^2 + (61 - 68)^2 + (85 - 68)^2 + (74 - 68)^2 + (73 - 68)^2 + (72 - 68)^2 + (20 - 68)^2 + (58 - 68)^2 + (81 - 68)^2 + (78 - 68)^2 + (84 - 68)^2 + (73 - 68)^2)/11) = 17.8122

You might be interested in
What is the value of x?
Ratling [72]
11/36. You need to make both denominators the same
6 0
3 years ago
Solve the equation -5x + 3 = 2x - 1
frozen [14]

Step-by-step explanation:

Given

- 5x + 3 = 2x - 1

or, 2x + 5x = 3 + 1

or, 6x = 4

or, x = 4/ 6

Therefore x = 2 /3

Hope it will help :)❤

8 0
3 years ago
Read 2 more answers
Complete the table for y=1/2x-3
Readme [11.4K]

Tables are created by substitute a set of input values into the function to create outputs. The required table is as shown below

<em>x | y</em>

<em>0   -3 </em>

<em>1   -2.5</em>

<em>2   -2 </em>

<h3>Tables and values</h3>

Tables are created by substitute a set of input values into the function to create outputs

Using x = 0, 1 and 2 as the input values

Given the function

y = 1/2x - 3

If x = 0

y = 1/2(0) - 3

y = -3

If x = 1

y = 1/2(1) - 3

y = -2.5

If x = 2

y = 1/2(2) - 3

y = -2

Hence the required table is as shown below

x | y

0   -3

1   -2.5

2   -2

Learn more on tables and values here: brainly.com/question/12151322

#SPJ1

8 0
2 years ago
. Rectangle A measures 9 inches by 3 inches. Rectangle B is a scaled copy of Rectangle A. Circle all of
egoroff_w [7]

Answer:

the answer is b I know this because I'm a very young person but I'm a very young man who has been a great person for the last two decades so I'm not really into this

Step-by-step explanation:

I just don't want you back in here and you know this because I know this because you are a good friend of yours but you have no reason for me not knowing that I was in love and you are a great man but you have no idea how to do this 6AM 6AM I know this because you have to be with him to be a great person to be able and be able and be happy and you will have a great time

PERIOD BOO

3 0
3 years ago
Please answer all questions, will also give brainiest.
dedylja [7]
1) 5 cups of yellow paint; because if 10 cups of yellow paint are used for 2 cups of blue paint, then you would use 5 cups of yellow paint to even out the pigment of one cup of blue.
2) 3 cups of blue paint, and 15 cups of yellow paint
3) 5 cups of yellow for every cup of blue paint
4) for every cup of blue paint 5 cups of yellow are used to get the same shade of green
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is 3(a-2)=5a+4 help me pleaseee
    14·1 answer
  • (23+8x-x²)+(x³+x²+34-18x)
    7·1 answer
  • The dimensions of a rectangular garden were 4m by 5m. each dimension was increased b the same amount. the garden then had an are
    12·1 answer
  • Briggs is planning to make a batch of homemade play dough for an art project.
    10·1 answer
  • You have 2/3 of salad left over and want to divide among six friends. What expression describes the situation? Explain.
    5·1 answer
  • Zoe has 16.8 feet of fabric to make masks. Each mask takes 1.2 feet of fabric to make. How many masks can she make?
    14·1 answer
  • I need help I’m mark brainlest if u help me get it right
    12·1 answer
  • Use synthetic division to solve
    10·1 answer
  • For y=4x-3, find the
    8·1 answer
  • Which scenario most likely describes an example of plagiarism?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!