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
Yakvenalex [24]
3 years ago
9

A random sample of 8 recent college graduates found that starting salaries for computer scientists had a mean of $85000 and a st

andard deviation of $15000. There are no outliers in the sample data set. Construct a 95% confidence interval for the average starting salary of all computer scientists in gainesville.
Mathematics
1 answer:
DedPeter [7]3 years ago
3 0

Answer:

(72460, 97540)

Step-by-step explanation:

Given:-

- The sample size, n = 8

- The sample parameters of normal distributed data:

                     mean u = $85000

                     standard deviation s.d = $15000

Find:-

Construct a 95% confidence interval for the average starting salary of all computer scientists in gainesville.

Solution:-

- A random variable (X) denotes average starting salary of all computer scientists in gainesville has a sample normally distribution as follows:

                              X ~ N ( $85000 , $15000^2 )

- The general formulation for CI for known standard deviation with significance α = 1 - 0.95 = 0.05:

                    ( u - Z_a/2*(s.d/√n) < X < u + Z_a/2*(s.d/√n) )

- The Z_a/2 = Z_0.025 = 1.96:

                    ( 85,000 - 1.96*(15,000/√8) < X < 85,000 + 1.96*(15,000/√8) )

                    (72460, 97540)

                               

You might be interested in
Please help me I'm desperate!
Alexus [3.1K]
R = ((3V)/((pi)(h^2))+h)/3
6 0
3 years ago
If a turtle walk 2 yards then 10 in then 3 ft how many inches did it walk in all
ki77a [65]

Answer:

118

Step-by-step explanation:

2 yards=72 in

10inches=10inches

3feet=36

4 0
3 years ago
Read 2 more answers
So what is the answer 5 or 8?
Ray Of Light [21]
5 hope this help you
5 0
3 years ago
If Mike can tune 4 cars in 3 hours. How many cars can Mike tune in 8 hours?
motikmotik

Answer:

10 2/3 cars

Step-by-step explanation:

We can use a ratio

4 cars            x cars

------------- = -----------

3 hours          8 hours

Using cross products

4 *8 = 3 *x

32 = 3x

Divide each side by 3

32/3 = 3x/3

10 2/3 cars

5 0
2 years ago
I don't know if it's correct​
Bond [772]

Hello, This is correct.

first one is whole numbers

the third one natural numbers

the fourth are complex numbers

The last one is irrational numbers

8 0
3 years ago
Other questions:
  • True or false the square root of 16 is 4 explain why this is true
    9·2 answers
  • The price of oranges went from $.90 per lb to $1.20 per lb in five years. Find the rate of change of the price of oranges.
    7·1 answer
  • What does x equal 3.2x = 64
    14·2 answers
  • At a family reunion, each of Eddie's aunts and uncles is getting photographed once. The
    9·1 answer
  • Simplify 9√125 (show work)
    15·1 answer
  • Jonna mixes 1/4 gallon of orange juice and 1/2 gallon of pineapple juice to make punch. Each serving is 1/16 gallon. How many se
    6·1 answer
  • Please help due ASAP <br> Show workings
    10·2 answers
  • What are the x- and y-intercepts of the graph of 3x+6y=12?
    8·1 answer
  • PLEASE ANSWER ASAP!!!
    12·1 answer
  • PLEASE ANSWER THIS QUESTION CORRECTLY, I’LL GIVE YOU BRANLIEST! Please answer my other math questions if you solve this one, tha
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!