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
galben [10]
3 years ago
13

refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at two fast food restaurants. const

ruct a ​% confidence interval estimate of the mean​ drive-through service time for restaurant x at​ dinner; then do the same for restaurant y. compare the results.
SAT
1 answer:
CaHeK987 [17]3 years ago
4 0

Step-by-step explanation:

Assuming the data is as shown, restaurant X has a mean service time of 180.56, with a standard deviation of 62.6.

The standard error is SE = s/√n = 62.6/√50 = 8.85.

At 95% confidence, the critical value is z = 1.960.

Therefore, the confidence interval is:

180.56 ± 1.960 × 8.85

180.56 ± 17.35

(163, 198)

Restaurant Y has a mean service time of 152.96, with a standard deviation of 49.2.

The standard error is SE = s/√n = 49.2/√50 = 6.96.

At 95% confidence, the critical value is z = 1.960.

Therefore, the confidence interval is:

152.96 ± 1.960 × 6.96

152.96 ± 13.64

(139, 167)

You might be interested in
Waarmee
Tcecarenko [31]

Answer:

cevap 135 olur

açıklaması: 5-2=3 eder yani 3 81e eşitmis 81÷3 ışe 27 olur bizden nevruzun çözdüğü sayıyı istiyor. bu yüzden 27×5=135 olur

3 0
3 years ago
You have the right to examine and copy exposure and __________ records.
fomenos
Medical records 

Hope this helps love!!
5 0
3 years ago
Read 2 more answers
ACT scores and
Scorpion4ik [409]
The answer is c yagwvwiahecwyw
3 0
1 year ago
You are less likely to see a total solar eclipse than a total lunar eclipse because
Evgesh-ka [11]

I think the answer is d. the moon's umbra only covers a small area on earths surface.

6 0
3 years ago
2. Despite her crazy claims, the lawyers said her<br> testimony was accurate ?
cupoosta [38]

Answer:.Explanation:.

4 0
2 years ago
Other questions:
  • What are the advantages of following a strict repayment schedule?
    9·2 answers
  • Plz help asap i will mark you as brainlist
    10·2 answers
  • A.d.d m.y s.n.a.p i.t.s mauricio_3043
    9·2 answers
  • Which statements describe homologous structures? Select three options.
    10·1 answer
  • Choose the expressions that are sums or differences of two cubes. 64 a12b51 –t6 u3v21 8h45 – k15 75 – n3p6 –27 – xz9
    13·1 answer
  • In the first two paragraphs, the author describes experiences from her girlhood and early adulthood primarily to.
    12·1 answer
  • There are many positive effects to globalization, but which of the following would be a negative effect?.
    7·1 answer
  • When light enters into a medium of different optical density is.
    11·1 answer
  • Keeping in mind the symbolism in this passage, what is the best interpretation of caesar’s attitude about his possible death? hi
    13·2 answers
  • The prime mover of elbow flexion is biceps brachii.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!