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
Serga [27]
3 years ago
11

Since the Boston marathon began in 1897, the finish time has been incrementally decreasing. The mean finish time to date is 231

minutes with a standard deviation of 40 minutes. Based on this information, what would allow us to use a Z-score in order to construct a confidence interval to estimate the mean finishing time of the most recent Boston Marathon with a sample size of 40 participants. Choose all that apply.
Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer:

hello your question lacks the required options but i will provide a general answer to your question

answer : The mean value  and the standard deviation would allow us use a Z-score

Step-by-step explanation:

mean value = 231 minutes

standard deviation ( std ) = 40 minutes

sample size = 40

The parameters that would be applicable while use Z-score are : The given mean value and the standard deviation

This is because the value of a z-score gives us an information on how far we are from the mean score i.e. number of standard deviations

+Zscore means that the score  is above the average value

-Zscore means that the score is below the average value

You might be interested in
What is the value of x?
jok3333 [9.3K]

\\ \sf\longmapsto \dfrac{x}{10}=\dfrac{42}{15}

\\ \sf\longmapsto 15x=42(10)

\\ \sf\longmapsto 15x=420

\\ \sf\longmapsto x=\dfrac{420}{15}

\\ \sf\longmapsto x=28

8 0
2 years ago
For the period 1971 − 2001, the number y of films produced in the world can be modeled by the function y = 10x2 − 94x + 3900 whe
Lera25 [3.4K]
The question that you have input is clearly wrong. It's not a quardratic equation. 10X2 doesn't make any sense for a quadratic equation. You should change it to 10x^2 which would make more sense
4 0
3 years ago
Who needs free 50 points only two winners hurry up
jolli1 [7]

Answer:

ty I need points your the best

Step-by-step explanation:

.

4 0
3 years ago
Read 2 more answers
PLEASE HELP ME!! IM IN DESPERATE NEED OF HELP
vesna_86 [32]

Answer:

12

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
2. Kevin asked Olivia what parallel lines are. Olivia responded, "They are lines that never
Shkiper50 [21]
A I hope this really helps
6 0
2 years ago
Other questions:
  • What is an expression with a negative exponent that has a value between 0 and 1/2
    15·1 answer
  • How you work out 7 (-5v-8)
    10·2 answers
  • Is 60 a rational square root
    11·1 answer
  • Multiply the polynomial <br><br> 10. (3-2v)(2-5v)<br><br> 11. (5x-4)(3x2+x-5)
    14·1 answer
  • HELP ME A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she take
    14·1 answer
  • 10-9+8×6÷(5-2^2) step by step please
    6·2 answers
  • You have a gross income of $117,151 and are filing your tax return singly. You claim one exemption and can take a deduction of $
    14·2 answers
  • 99 POINTS IF U ANSWER BOTH RIGHT
    5·1 answer
  • PLEASE ANSWER! I’m a tad desperate..
    11·1 answer
  • Connor found out that 60% of 40 is the same as 25% of the number n. what is the value of n?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!