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
Alex_Xolod [135]
3 years ago
15

In the 2000 Sydney Olympics, a special program initiated by IOC president Juan Antonio Samaranch allowed developing countries to

send athletes to the Olympics without the usual qualifying procedure. Here are the 71 times for the first round of the 100 meter men’s swim (in seconds).60.39 49.93 53.40 51.82 50.46 51.36 50.28 50.19 52.1450.56 52.72 50.95 49.74 49.16 52.57 52.53 52.09 52.4049.75 54.06 53.50 50.63 51.93 51.62 52.58 53.55 51.0749.76 49.73 50.90 59.26 49.29 52.78 112.72 49.79 49.8352.43 51.28 52.22 49.76 49.70 52.90 50.19 54.33 62.4551.93 52.24 52.82 50.96 48.64 51.11 50.87 52.18 54.1250.49 49.84 52.91 52.52 50.32 51.52 52.00 52.85 52.2449.45 51.28 49.09 58.79 49.74 49.32 50.62 49.45Calculate the sample mean and sample standard deviation(use Excel functions).
Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

The means for times for the first round of the 100 meter men’s swim is 52.64789 seconds

The satandar deviation for times for the first round of the 100 meter men’s swim is 7.60182 seconds

Step-by-step explanation:

The sample mean for a set of n data is given by:

\bar X = \frac{1}{n}\sum{x_i}

In other words, the sample mean of the times for 71 times of the first round measured in seconds is:

\bar X = \frac{1}{71}\sum{x_i} = 52.64789 seconds

The sample standard deviation for a set of n data is given by:

S = \sqrt{\frac{1}{n-1}\sum{(x_i - \bar x)^2}}

In other words, the sample standard deviation of the times for 71 times of the first round measured in seconds is:

S = \sqrt{\frac{1}{n-1}\sum{(x_i - \bar x)^2}} = 7.60182 seconds

You might be interested in
2. Select the factor table with the appropriate
Alexandra [31]

Answer:

60

Step-by-step explanation:

5+5+5+5+5+5+5+5+5+5+5+5

4 0
3 years ago
HURRY PLEASE!! Evaluate the expression below.
tatuchka [14]

Answer:

A

Step-by-step explanation:

Given

20 - ||  - 13 | + 17 |

Note the absolute value function always returns a positive value, that is

| - a | = | + a | = a, thus

= 20 - | | - 13 |+ 17 |

= 20 - | 13 + 17 |

= 20 - | 30 |

= 20 - 30

= - 10 → A

6 0
3 years ago
Read 2 more answers
The figure below shows the parcel of land on, which dallas, the zoo keeper , confines his zebras. His rule of thumb dictates tha
Irina18 [472]
Unfortunately, you haven't shared the "figure below" that shows the dimensions of this parcel of land.  Without being able to calculate the area of the parcel, you cannot really answer this question exactly.

Suppose that the area of the parcel were 6000 square meters.  Dividing that by 1500 square meters, we get 4, which represents the number of zebras that can live on this (example) parcel.

Figure out the area of your parcel, in square meters, and thend divide your result by 1500 square meters.  This will give your your answer.  Please note:  your answer will be a COUNT of zebras.  "meters" does not belong in this answer.
6 0
3 years ago
17.) Which of the following values is the least?<br>1-14), 114, 114, 721 196​
grigory [225]

Answer:

something

Step-by-step explanation:iwdyucbjcnwiuvbevjeyivbejkbchevbhe chksdb gbg svgfv e jcf dfv ve dc n dhcvgfefvgehncsjcbhdvdgvhj sn jshgvsjcvsgsdcvscjbsdguvsjcbs jbfjhgbhbcshbhvsgvdjjh jggvgcsjvjhfv

8 0
3 years ago
The store ratio is 4 apples : 3 oranges. If the store has
horsena [70]

Answer:

28

Step-by-step explanation:

21 divided by 3 is 7, take that 7 and multiply it by the 4. Hope this helps!

4 0
2 years ago
Other questions:
  • Is there any destiny 2 fans here. here's my question<br> 85×35×999×63=
    10·2 answers
  • Help pleaseeeeeeeeeee
    8·1 answer
  • Use the distributive property to expand the expression 11(3x+5y)
    15·2 answers
  • Can someone please help me answer this math question?
    9·2 answers
  • If you have three quarters, three dimes, and six nickels, how much money do you have?
    15·1 answer
  • Frank can buy red pens in boxes of 8 and blue pens in boxes of 10. He wants the same number of red pens as blue pens. Fill in th
    8·1 answer
  • PLEASE HELP IM STUUUCK
    5·1 answer
  • HELLO I NEED A MATH EXPERT RIGHT NOW TO HELP ME WITH SOME MATH STUFF
    7·2 answers
  • Answer..............................
    6·1 answer
  • I’m having trouble converting mixed fractions to proper fractions can someone explain?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!