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
6 There were 35 children and 10 adults at a cookout. What is the ratio of children to total people at the cookout?
Grace [21]
7:9 because there are 35 children and 10 adults. Add 35 and 10 you get 35:45 then you simplify the ratio to get 7:9.
6 0
3 years ago
Find the area of the shape​
Salsk061 [2.6K]

Answer: 12.5

Step-by-step explanation:

you go on the web and google area of trapezium

8 0
3 years ago
Read 2 more answers
The picture below shows a container that Jeff uses to freeze water: A cylinder is shown with base diameter of 8 centimeters and
Butoxors [25]
Okay, first we need to figure out what one would make. We need to figure out the area of the base x height. The diameter is 8 so we will cut that to 4 so we can do piR2! 3.14x16 would be 50.24. Then we mutiply that by 10 to get 502.4cm3! Okay, now we would divide 2000/502.4 to find out how many times we would have to make the containers to get to 2000. The answer is 3.98, which we will have to round up since its asks for the minimum and you cant make a container 3.98 times. So the answer is 4!
5 0
3 years ago
Water is frozen at what degree
Jet001 [13]
Water can freeze at 32 degrees f 
3 0
3 years ago
Read 2 more answers
Compound Probability
Sauron [17]

Answer:

9/7is the chance of coming red ball

8 0
2 years ago
Read 2 more answers
Other questions:
  • Multiply (2x-5)(x+7) and show work please
    13·2 answers
  • Slope intercept form ​
    13·2 answers
  • PLEASE HELP FASTTTTTTT
    6·1 answer
  • The mclntosh family went apple picking.They picked a total of 115 apples.The family ate a total of 8 apples each day.After how m
    8·1 answer
  • Can someone please give me the answer I will mark u brilliant
    5·1 answer
  • The environmental club at Paul sells gum and candy bars as a fundraiser. One afternoon, they sold $200 worth of candy. They need
    11·1 answer
  • PORFAVOR AYUDAA :v!!!
    11·1 answer
  • At an outdoor party location, the tables seat 12 guests each. The party host invited 163 people and 9 people responded that they
    7·1 answer
  • I need help please. can someone please help me
    10·1 answer
  • Write 0.641 as a fraction in simplest form
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!