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
Scrat [10]
4 years ago
9

An article reported that for a sample of 41 kitchens with gas cooking appliances monitored during a one-week period, the sample

mean co2 level (ppm) was 654.16, and the sample standard deviation was 165.74. (a) calculate and interpret a 95% (two-sided) confidence interval for true average co2 level in the population of all homes from which the sample was selected. (round your answers to two decimal places.)
Mathematics
2 answers:
eduard4 years ago
8 0
<span>- x ± zά/2x s/âšn Here zά/2= z0.05/2= 1.96 Substitute the values we have 654.16 ± 1.96 x 164.43/âš41 =(603.83, 704.49)</span>
tester [92]4 years ago
7 0

Given:

Mean of 654.16

Sample size is 41

Standard dev is 165.74

Alpha is 1 – 0.95, Z(0.025) = 1.96

So the computation would be:

Mean ± Z* s/sqrt (n)

= 654.16 ± 1.96*165.74/sqrt(41)

= 654.16 ± 1.96*25.88

= 654.16 ± 50.7248

= 603.4352, 704.8848 is the confidence interval

Interpretation: We are 95% confident that this confidence interval contains the true pop. mean

You might be interested in
Will mark brainliest Find the sum of x^2 + 3x and -2x^2 + 9x +5.
zimovet [89]

Answer: -x^2 + 12x +5

Step-by-step explanation:

6 0
3 years ago
D. -6.24, -4.03, -1.82, 0.39, ... Find the 20th term.
Gemiola [76]

Answer:

the 20th term of the sequence is 35.75

6 0
3 years ago
Find the total surface area of the cone in the figure. ( use rr=3.14.)
nikitadnepr [17]

Answer:

Answer D

Step-by-step explanation:

The formula is A = pi r(r+\sqrt{h^2+r^2}). We have our r (radius) and h (height), so plugging it all in would give us A = (3.14)(5 + sqrt(12^2)+(5^2). After computing this, you would get answer D, 282.6.

4 0
3 years ago
Determine the next three terms of 180,360,540,720​
ella [17]

Answer:

900, 1080, 1260

Step-by-step explanation:

Just used a pattern solving calculator

Please mark Brainlest

8 0
2 years ago
The quantity of 6 less than a number multiplied by 8
Bas_tet [7]

6x-6=8x

subtract 6x from both sides

-6=2x

divide both sides by 2

x= -3

5 0
3 years ago
Other questions:
  • 50 POINTS PLEASE HELP
    10·2 answers
  • A gumball machine contains blue, pink,white and green gum balls. In the machine, 50% of the gumballs are blue, 10% are pink 20%
    14·1 answer
  • Can someone help please?
    6·2 answers
  • Economists study the way society uses its resources. One important resource studied is agriculture. The recent increase in deman
    5·2 answers
  • Which two-dimensional shape can be rotated about the y-axis to create a cone?
    15·2 answers
  • Hank draws a line with a zero slope through the points
    7·1 answer
  • The slope-intercept form of a linear equation
    11·1 answer
  • What is 36 and 8 greatest common factor
    8·2 answers
  • -2(8+5gr) <br>I will mark who ever is right Most brainly <br><br><br>Have a great day ​
    11·1 answer
  • Evaluate the quantity 3 squared times 3 to the power of negative 5 end quantity over 5 to the power of negative two.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!