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
Arada [10]
2 years ago
14

Salaries of 49 college graduates who took a statistics course in college have a​ mean, x overbar​, of $ 65 comma 300. Assuming a

standard​ deviation, sigma​, of ​$17 comma 805​, construct a 95​% confidence interval for estimating the population mean mu.
Mathematics
1 answer:
Molodets [167]2 years ago
7 0

Answer: 60,540< \mu

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}-z^*\dfrac{\sigma}{\sqrt{n}}< \mu

, where \sigma = Population standard deviation.

n= sample size

\overline{x} = Sample mean

z* = Critical z-value .

Given :  \sigma=\$17,000

n= 49

\overline{x}= \$65,300

Two-tailed critical value for 95% confidence interval = z^*=1.960

Then, the 95% confidence interval would be :-

65,300-(1.96)\dfrac{17000}{\sqrt{49}}< \mu

=65,300-(1.96)\dfrac{17000}{7}< \mu

=65,300-4760< \mu

=60,540< \mu

Hence, the 95​% confidence interval for estimating the population mean (\mu) :

60,540< \mu

You might be interested in
What is f+0.3&lt;-1.7 please help
satela [25.4K]
F<-2.  You just subtract 0.3 to -1.7
5 0
3 years ago
Read 2 more answers
Which represents the solution set of 5(x+5)&lt;85
boyakko [2]
Divide both sides by 5 , so 5(x + 5)/5 < 85/5  , which will give you <span>x + 5 < 17 , then minus 5 from both sides which will give you x < 12 . hope this helps !</span>
8 0
2 years ago
Read 2 more answers
Solve for x:<br> 3/ X - 4 = 6/ X+1
Lina20 [59]

Answer:

-3/5

Step-by-step exp:

given in the file. Hope it helps.

8 0
2 years ago
Complete the square x^2+100+■
____ [38]
X= 102 • + (75) there you go
7 0
2 years ago
Part A
ivann1987 [24]
The answer is, C
2x +3y=7.20
4x+2y=8.80
6 0
3 years ago
Other questions:
  • Round 7180 and 4920 to the nearest 1000
    9·1 answer
  • A doctor develops the model y = 36.57x+4 for the number of words a toddler can speak (x) versus the months that have passed sinc
    9·1 answer
  • Does the following graph have horizontal or vertical symmetry?
    11·2 answers
  • A segment has endpoints at (-2,3) and (7,9), How long is the segment?
    12·1 answer
  • A.<br> B.<br> C.<br> D.<br> ????????????
    15·1 answer
  • Hello<br><br> answer my question
    12·1 answer
  • Blank subtract 3/8 equals to 3/4
    14·1 answer
  • Is -2 more than -1? or is it the other way around
    13·2 answers
  • Can like someone help me with O.o.O (order of operations)
    5·2 answers
  • The measures of the angles of a triangle
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!