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
ser-zykov [4K]
3 years ago
11

A meteorologist is studying the speed at which thunderstorms travel. A sample of 10 storms are observed. The mean of the sample

was 12.2 MPH and the standard deviation of the sample was 2.4. What is the 95% confidence interval for the true mean speed of thunderstorms?
Mathematics
1 answer:
dezoksy [38]3 years ago
4 0

Answer:

The 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

Step-by-step explanation:

Given information:

Sample size = 10

Sample mean = 12.2 mph

Standard deviation = 2.4

Confidence interval = 95%

At confidence interval 95% then z-score is 1.96.

The 95% confidence interval for the true mean speed of thunderstorms is

CI=\overline{x}\pm z*\frac{s}{\sqrt{n}}

Where, \overline{x} is sample mean, z* is z score at 95% confidence interval, s is standard deviation of sample and n is sample size.

CI=12.2\pm 1.96\frac{2.4}{\sqrt{10}}

CI=12.2\pm 1.487535

CI=12.2\pm 1.488

CI=[12.2-1.488, 12.2+1.488]

CI=[10.712, 13.688]

Therefore the 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

You might be interested in
3340 divided by 8 Need the answers
Luden [163]

Answer:

417.5

I hope this helps

3 0
2 years ago
Alyssa is driving to Chicago, and she is traveling at 60 miles per hour. If Chicago is 96 miles away, how long will it take her
Leviafan [203]

Answer: C

Step-by-step explanation: 1hour 36minutea

8 0
3 years ago
Read 2 more answers
If 9 people had a some pizza and there was 2 boxes how many pizzas was left
Afina-wow [57]
They are 18 pizzas left
8 0
3 years ago
Please help me with 1,2,3,4,5 and show me the steps and the answers do not send me link please
lina2011 [118]

Answer:

I did the first one on paper

Step-by-step explanation:

i also sent one page of my personal notes on right triangle Pythagoerean thereom I hope this helps

4 0
2 years ago
Can someone please help me!!!!!!!!
Daniel [21]

Answer:

CHEESE

Step-by-step explanation:

CHEESE IS ALWAYS THE ANSWER!!!

5 0
2 years ago
Read 2 more answers
Other questions:
  • Each visit to a water park costs $19.95. An annual pass to the park costs $89.95. Write an inequality to represent the number of
    9·1 answer
  • Whats the answer to 3/5×3/5
    7·1 answer
  • Principal = $450<br> rate = 5%<br> time = 4 years<br> simple interest =<br> compound interest =
    13·2 answers
  • Does the following equation represent growth or decay y=4^x
    15·1 answer
  • 1. An item is on sale for 40% off. If the original price of the item is $40, what is the total
    10·1 answer
  • Nine less than five times a number is equal to -30. explanation and answer
    6·1 answer
  • Please help asap. will give brainliest to first answer.
    14·1 answer
  • Carol has 7 rolls of pennies containing 50 coins each, 11 rolls of nickels containing 40 coins each, 3 rolls of dimes containing
    7·1 answer
  • A chemist has 5 1/10 kg of calcium chloride. If she uses 0.15 kg of the compound each time she performs and experiment, for how
    13·1 answer
  • All items in a clothing store are on sale for the same percentage off the original price.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!