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
What is the equation of the line that goes through the points (5, 11) and (7,21)?
iragen [17]

Answer:

y = 5x - 14

Step-by-step explanation:

First point coordinates

x₁

5

y₁

11

Second point coordinates

x₂

7

y₂

21

Result

Slope (m)

5

m = 10 / 2 = 5 / 1 = 5

Your function

The entered points belong to an increasing, linear function.

Equation: y = 5x - 14.

Hope i helped :)

5 0
3 years ago
Which word should replace the question mark (?) in the
artcher [175]

Answer:

speed I'm pretty sure sorry if its wrong

7 0
3 years ago
Read 2 more answers
Find cos x if sin x =0.82.
True [87]

Answer:

cosx= 35. Use Trignometrical identity cosx = √1−sin2x . cos x = √1−1625 = √925 = 35 to be the ...

Missing: =0.82 ‎| Must include: =0.82

Step-by-step explanation:

5 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST
Neko [114]
The answer is 3 4/5 I believe
7 0
2 years ago
After 9 months, the simple interest earned on an investment of $1200 is $72. find the interest rate.
Deffense [45]
Use the formula i=prt, where i is the interest earned, p is the principal, r is the rate (as a decimal fraction) and t is the elapsed time, in years.

Here i = $72 = $1200 r (9/12)                    (9 months is 9/12, or 3/4, of 1 year)
Reducing, 
              $72 = $900r
                                          Solving for r, r=0.08, or 8 percent per year.
7 0
3 years ago
Other questions:
  • Help meee i need the X and what the angles are
    6·1 answer
  • Pls help with explanation. Will give brainliest
    11·1 answer
  • What is the lenght of the distance between the chair and the end table ?
    10·1 answer
  • -10b + 5 = 7b + 5 .<br> ANSWER ASAP<br> Show step by step on paper please.
    5·1 answer
  • How many kg of water is 2.2 pounds
    8·2 answers
  • A bridge connecting two cities separated by a lake has a length of 5927.261 yd. use the table of facts to find the length of the
    6·1 answer
  • Find the L.C.M of 10,12,15 by division method​
    7·1 answer
  • If correct ill give brainlist
    14·1 answer
  • 5x2 + 34x – 7 = 0<br> solve by factoring
    12·1 answer
  • 1/7 x X =1<br> X x 1/11=1<br> 1 divided by 1/5=
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!