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
djyliett [7]
3 years ago
10

An athletic coach conducted an experiment to test whether a four-week stretching and flexibility program reduces the number of m

uscular injuries that occur during athletic events. The coach randomly selected 30 athletes from several sports and randomly assigned 15 athletes to the four-week program. The remaining 15 athletes did not participate in any type of flexibility program during the four weeks.
Which statements about this study are true?

This study uses random sampling.
This study uses a control group.
This study uses a repeated measures design.
This study uses blocking.
This study uses blinding.

Mathematics
2 answers:
ohaa [14]3 years ago
8 0

Answer: it’s random sampling and control groups.

Step-by-step explanation: i got a 100% on my test :)

nirvana33 [79]3 years ago
5 0

Answer: This study uses a control group, this study uses repeated measures design, and this study uses random sampling

Step-by-step explanation:

You might be interested in
2L plus 2L plus 1.5L plus 2.5L=8L just making shore it is right?
julia-pushkina [17]

Answer: yes you are right hope this helped

plz make brainly

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A pastry chef has a container with 1/4 pound of sprinkles the chef needs to spread the sprinkles equally among 5 cakes. What fra
zepelin [54]

Answer:

d

Step-by-step explanation:

7 0
3 years ago
Solve x 3+3(x+2)=-24​
gregori [183]

Answer:

x=-11

Step-by-step explanation:

3+3x=6=-24

3x+9=-24

3x=-33

x=-11

8 0
3 years ago
Read 2 more answers
Given the function g(x) = 6(4)x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
Natasha2012 [34]
I also need this answer so when you find out let me know
5 0
3 years ago
There are 5 different pairs of gloves, where left and right are distinguishable. Select 4 of the 10 gloves. (a) How many are the
Shtirlitz [24]

Answer:

(a) How many are there to select 2 pairs of gloves?

10 ways

(b) How many ways are there to select 4 gloves out of the 10 such that 2 of the 4 make a pair. (a pair consists of any right glove and left glove.)

130 ways

Step-by-step explanation:

We solve the above questions using Combination

Combination = C(n, r) = nCr

= n!/n! ×(n - r)!

(a) How many are there to select 2 pairs of gloves?

We have 5 pairs of gloves. Therefore, the number of ways to select 2 gloves =5C2

= 5!/2! × (5 - 2)!

= 5!/2! × 3!

= 5 × 4 × 3 × 2 × 1/(2 × 1) × (3 × 2 × 1)!

= 10 ways.

(b) How many ways are there to select 4 gloves out of the 10 such that 2 of the 4 make a pair. (a pair consists of any right glove and left glove.)

We are told to select 4 gloves out of the 10 gloves = 10C4

We have 5 pairs, we need to make sure that two out of the selected 4 make a pair = 5 × 2⁴

= 80

Hence,

10C4 - 5C4

= [10!/4! × (10 - 4)!] - 80

= 210 - 80

= 130 ways

3 0
3 years ago
Other questions:
  • Rewrite the incorrect step so that it is correct , then simplify.<br> Please help asap :) !
    6·1 answer
  • In a​ lottery, 6 numbers are randomly sampled without replacement from the integers 1 to 38. Their order of selection is not imp
    15·1 answer
  • Please help I suck at math!??!?
    11·2 answers
  • The radius of a quarter circle is 1 mile. What is the quarter circle's perimeter?
    10·1 answer
  • Calculate the distance between the points -11 and 4 on a number<br> line.
    5·1 answer
  • Please help me due in an hour will mark brainliest!!! Number 11.
    14·1 answer
  • I need help figuring out the answers to these kinda poorly worded questions
    12·1 answer
  • Question 6 of 10
    13·1 answer
  • Efectua ( -69 ) - ( +58 ) + (-76 ) - ( -88 ) + ( -47 ) - ( -64 )
    12·1 answer
  • You and your friend race from point A to point C . You run from A to B and then from B to C . Your friend runs from A to D and t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!