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
777dan777 [17]
2 years ago
8

Computer Action Company sells computers and computer parts by mail. The company assures its customers that products are mailed a

s soon as possible after an order is placed with the company. The distribution of the times taken to mail products is known to follow a normal distribution. A sample of 28 recent orders showed that mean time taken to mail products for these orders was 70 hours and the standard deviation was 14 hours. If you were asked to find a 95% confidence interval for the mean time taken to mail products for all orders received at the office of this company, would you use z or t
Mathematics
1 answer:
Scorpion4ik [409]2 years ago
8 0

Answer:

The t distribution is used, because we have the standard deviation for the sample.

Step-by-step explanation:

When to use the z or the t distribution?

When we have the standard deviation for the population, we use the z distribution.

When we have the standard deviation for the sample, we use the t distribution.

In this question:

We have the standard deviation for the sample, which means that the t distribution is used.

You might be interested in
Someone help me plz hurry <br><br> -51/7
Maurinko [17]

Answer:

-51/7

Step-by-step explanation:

-51/7 cannot be simplified

6 0
3 years ago
Read 2 more answers
**ANSWER ASAP WILL GIVE BRAINLIEST; QUESTIONS ARE IN PICTURE**
lord [1]

Answer:

below( hope this helps )

Step-by-step explanation:

2. No because we don't know if the triangles are right triangles.

3. unknown since there are no labels to what the triangle points are

6 0
3 years ago
This is pretty easy, give me some synonyms for the word brazeness. When you do that find me some antonyms.
Alecsey [184]

Answer:

Synonyms: Shameless, bold, audacious

Antonyms: Timid, shy

Step-by-step explanation:

3 0
2 years ago
Using the triangle below, find the length of side c if side a is 15 and θ =55. Round your answer to the nearest tenth.
Kaylis [27]

Answer:

15 sin 55 = 12

Step-by-step explanation:

It is a basic trigonometry formula

5 0
3 years ago
(question in the picture!<br><br>A. 72°<br>B.18°<br>C.45°<br>D.108°<br>(please do hurry, thank you!)
aliya0001 [1]
Answer is x = 72

hope that helps
4 0
3 years ago
Read 2 more answers
Other questions:
  • Jeffrey opened a savings account with $15,000. His annual interest rate is 4.8%, and his interest is compounded quarterly. How m
    12·1 answer
  • The pictures are in order of the the questions asked.
    8·1 answer
  • D=5, a10=48. find a45
    9·1 answer
  • 3.3 multiply 2.5+ 5.7 multiply 2.5<br> solve it please
    10·1 answer
  • If there are 7 frankfurters to the pound, how
    14·2 answers
  • 1 liter of ink can print 5000 pages of text. If you had 100 gallons of ink then how many pages could you print?
    5·2 answers
  • I desperately need help with this please help. (Yes I’m bad at math)
    5·2 answers
  • Solve (s−9)(s−1)=0. how do I solve this equation
    8·1 answer
  • 4. Ronnie has an after-school job at an animal shelter. She notices that at one meal, 3
    7·1 answer
  • Pls help <br> must find AC
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!