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
Karo-lina-s [1.5K]
3 years ago
6

A study was done to determine the average number of homes that a homeowner owns in his or her lifetime. For the 60 homeowners su

rveyed, the sample average was 4.2 and the sample standard deviation was 2.1. Calculate the 95% confidence interval for the true average number of homes that a person owns in his or her lifetime.
A) (3.90, 4.50)
B) (3.66, 4.74)
C) (4.01, 4.39)
D) (3.67, 4.73)
Mathematics
1 answer:
const2013 [10]3 years ago
6 0

Answer:

D) (3.67, 4.73)

Step-by-step explanation:

Confidence Interval for the true average number of homes that a person owns in his or her lifetimecan be calculated using M±ME where

  • M is the average number of home owned (4.2)
  • ME is the margin of error from the mean

And margin of error (ME) can be calculated as

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

  • z is the corresponding statistic in the given confidence level(1.96)
  • s is the standard deviation of the sample(2.1)
  • N is the sample size (60)

Putting the numbers we get ME=\frac{1.96*2.1}{\sqrt{60} }≈0.53

Then the 95% confidence interval is 4.2±0.53 or (3.67, 4.73)

You might be interested in
Four times a number, minus 9, is equal to three times the number, plus 2.
iVinArrow [24]
Answer is
4x-9 = 3a+2
5 0
3 years ago
Estimate 416x9 then find thw product
Alla [95]
3771,
Estimate: Calculate
Product: Answer
416 x 9 = 3771.
4 0
3 years ago
Solve the proportion r/72=1/3 r=?<br><br><br><br> please help meee
kumpel [21]

Answer:

R= 24

Step-by-step explanation:

Have a nice day/night :)

Also if you you can may you please mark me brainliest

3 0
3 years ago
Read 2 more answers
Consider the linear function f(x)=4x-5 Find the values of x for which f(x)=3,f(x)=5,f(x)=-3
Evgesh-ka [11]

Answer:

f(2) = 3

f(5/2) = 5

f(½) = -3

Step-by-step explanation:

Given the linear function f(x) = 4x - 5:

<h3>f(x) = 3</h3>

3 = 4x - 5

3 + 5 = 4x - 5 + 5

8 = 4x

8/4 = 4x/4

2 = x

Therefore, when f(x) = 3, x = 2.

<h3>f(x) = 5</h3>

5 = 4x - 5

5 + 5 = 4x - 5 + 5

10 = 4x

10/4 = 4x/4

5/2 = x

Therefore, when f(x) = 5, x = 5/2.

<h3>f(x) = -3</h3>

-3 = 4x - 5

-3 + 5 = 4x - 5 + 5

2 = 4x

2/4 = 4x/4

½ = x

Therefore, when f(x) = -3, x = ½.

7 0
3 years ago
Can someone please help me with this???
tino4ka555 [31]

Answer:

1 cm

Step-by-step explanation:

To solve this problem we can use the Pythagorean theorem. In fact the diagonal of a rectangle is an hypotenuse of a right triangle, while the length is a leg. The width is the other leg

width = √2^2 - (√3)^2 = √4 - 3 = √1 = 1 cm

8 0
2 years ago
Other questions:
  • Buses to exeter leave a bus station every 20 minutrs busses to plymouth leave the bus satation every 16 minutes a bus to eveter
    7·1 answer
  • Please help i have 4 min
    8·1 answer
  • Are 6r +3 and 9r equivalent ​
    7·1 answer
  • -162=-3+4(6 - 7x)<br> A) (-10) B) {6}<br> c) 3 D)-4)
    10·1 answer
  • -2x + 3y= in slope-intercept form
    6·2 answers
  • Which ordered pair is a solution to the system?<br> x – 2y = –2<br> 3x – 2y = 2
    6·1 answer
  • 15 points, 5 stars and thanks will be your reward if you answer this question correctly: a(7x+2)=bx+8 a and b are both integers.
    13·1 answer
  • PLEASE HELP ME IM FAILING MY CLASS
    5·1 answer
  • Seven less than twice a number is 13
    6·1 answer
  • Divide and write in simplest form.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!