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
If f(x)=-x^2 and g(x) = -x^2+4x+5 what is the product
Dimas [21]

Answer:

x^{4} - 4x³ - 5x²

Step-by-step explanation:

-x²(-x² + 4x + 5)         Distribute

x^{4} - 4x³ - 5x²

If this answer is correct, please make me Brainliest!

8 0
3 years ago
A turtle travels mile in hour. At this rate, how far can the turtle travel in an hour
jonny [76]

Answer:

hey did you phrase the question wrong bc it says a turtle travels one mile in an hour then you are asking how far it travels in an hour

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Is the fraction 1/3 equivalent to a terminating decimal or a decimal that does not terminate?
bezimeni [28]
It is a decimal that does not terminate. 1/3 is equivalent to .3333333333 and so on. it never ends
4 0
3 years ago
Whats the value of x
Vlad [161]

Answer:

write  quizzes rock cheat  and press the first result you get then write the code for the game and it will show all the answers for all the question  

8 0
2 years ago
Read 2 more answers
1+sin^2 x = 2-cos^2 x
Alinara [238K]
1+sin²x=2-cos²x
Remenber:   sin²x+cos²x=1      ⇒sin²x=1-cos²x
 
1+sin²x=1+(1-cos²x)=2-cos² x       (this is true)

3 0
2 years ago
Other questions:
  • What is the s plop of the line passes through the points (-2,15) and (-8,-5) show your work,
    14·1 answer
  • “Use the properties to rewrite this expression with the fewest terms possible:
    13·1 answer
  • Please help me with this question.
    8·1 answer
  • What is the answer to 215 rounding to the nearest 10<br> Math
    7·1 answer
  • A goat is placed in a circular pen with a radius of 15 feet. The formula for the area of a circle is A=πr2, where r is the radiu
    9·1 answer
  • Just the first please
    6·2 answers
  • Graph<br> y-intercept<br> x-intercept<br> vertex<br><br> y=x^2+4x-5
    7·1 answer
  • Solve the inequality.<br> 2(4+2x)25x+5<br> o x&lt;-2<br> O x&gt;-2<br> O x&lt;3<br> O X&gt;3
    10·1 answer
  • Is this a multiplication question?
    8·1 answer
  • Find The distance between (5,2) and (5,0) on the coordinate Plane
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!