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
vesna_86 [32]
3 years ago
6

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp

orts. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of 50 business travelers follow.1 5 6 7 8 8 8 9 9 9 9 10 3 4 5 5 7 6 8 9 10 5 4 6 5 7 3 1 9 8 8 9 9 10 7 6 4 8 10 2 5 1 8 6 9 6 8 8 10 10Develop a 95% confidence interval estimating of the population mean rating for Miami. Round your answers to two decimal places. Enter your answer using parentheses and a comma, in the form (n1,n2). Do not use commas in your numerical answer (i.e. use 1200 instead of 1,200, etc.)
Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0

Answer:

Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)

Step-by-step explanation:

Confidence Interval can be calculated using the formula M±ME where

  • M is the mean of the sample
  • ME is the margin of error in a given confidence level

Using the sample obtained from 50 business travelers we get

  • Mean of the sample is 6.76
  • standard deviation of the sample is 2.526

Margin of error (ME) around the mean using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in 95% confidence level (1.96)
  • s is the standard deviation of the sample (2.526)
  • N is the sample size (50)

Using the numbers in the formula we get:

ME=\frac{1.96*2.526}{\sqrt{50} } ≈ 0.70

Then the confidence interval becomes 6.76±0.70

You might be interested in
Can someone please help me solve this?​
mezya [45]
Sorry this is quite hard but will you answer any question from me and here is the answer 9x feet
4 0
3 years ago
Read 2 more answers
Nendndnfbffjfjfjfjfjf
Whitepunk [10]

Answer:

a or c would be your answer hope this helps

Step-by-step explanation:

3 0
3 years ago
Write an appropriate direct variation equation if y = 18 when x = 2
Sergeu [11.5K]

Answer:

y=9x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In this problem we have

y=18 when x=2

Find the value of the constant of proportionality k

k=\frac{y}{x} ----> k=\frac{18}{2}=9

therefore

The equation is equal to

y=9x

8 0
3 years ago
Vx4=4 what is the answer
Volgvan

Step-by-step explanation:

v=4÷4

v=1 Ans

Do by transposition

hope it helps

8 0
2 years ago
What is equivalent to 5x+2y=12
lara31 [8.8K]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • In January, a bookstore sells 450 books, but in February, it sells only 300 books. What is the percent of change from January to
    11·1 answer
  • Simplify 9 to the 2nd over 9 to the 7th.
    10·2 answers
  • Show root 2 is a irrational number
    5·1 answer
  • 5x+2x this is for basic 9th grade. soo please dont go higher
    8·1 answer
  • 4400 x 400=????????????
    13·2 answers
  • HELP FAST!!! The Mogul Runners ski club planned a trip to Park City. Of the total number of club members, 11 signed up to go. If
    14·1 answer
  • the volume of a rectangular pyramid is 192 cubic units. if it's dimensions are reduced to one-fourth their original lemgth. what
    7·1 answer
  • How much is 50 meters in 1/2 minutes
    10·2 answers
  • Add 3.2+(-0.8) Plot the first addend and the sum on the number. <br><br>where do I plot them.??​
    13·1 answer
  • PLS HELP ASAP FIRST CORRECT ANSWER GETS BRAINLEIST​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!