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
Katyanochek1 [597]
3 years ago
8

A study was conducted to see if students given extra oxygen prior to taking the SAT could improve their scores. It was found tha

t 42 of 66 randomly selected students who received oxygen prior to taking the SAT improved their scores while 35 of 63 randomly selected students who were just given normal air improved their SAT scores. Which procedure should be used to see if there is evidence that students who breathed oxygen significantly improved SAT scores
Mathematics
1 answer:
erik [133]3 years ago
6 0

Answer:

Hypothesis testing of ' significance of difference between means'

Step-by-step explanation:

Study conducted to tests whether oxygen level prior SAT score improves test score. This can be done through - Hypothesis testing of ' significance of difference between means'.

Where x1 & x2 represent mean values of SAT test score before (or without) & after (or with) oxygen.

Null hypothesis [H0] = x1 = x2 , Alternate Hypothesis [H1] : x1 < x2

You might be interested in
How can you tell if a function is linear?
neonofarm [45]

Linear functions are usually of degree 1. They are a straight line. y=mx+b

3 0
3 years ago
While preparing for a morning conference, principal Corsetti is laying out 8 dozen bagels on square plates. Each plate can hold
timofeeve [1]

Answer:

Step-by-step explanation:

We have 8 dozen bagels, or 8*12=96 bagels.  Each plate can hold 14 bagels, so we have enough bagels to fill 96/14=about 6.86 plates.  However, we cannot have a fraction of a plate, so we round up to have a total of seven plates.  To fill all seven plates fully, 7*14=98 bagels would be needed, which is two more than we have.

To summarize, Mr. Corsetti has seven plates of bagels, and would need two more bagels to fill the last one up.

7 0
3 years ago
Isabelle and her parents plan to share the cost of her college education. The annual tuition cost for the college she plans to a
oksano4ka [1.4K]

Answer:

7392

Step-by-step explanation:

just divide 5544÷.75 on a calculator however you want to do it than you will get 7392

5 0
3 years ago
Which is the solution of the equation a + 2 = 10?
Alexandra [31]

Hey there!

a + 2 = 10

SUBTRACT 2 to BOTH SIDES

a + 2 - 2 = 10 - 2

CANCEL out: 2 - 2 because that gives you 0

KEEP: 10 - 2 because that helps solve for the a-value

10 - 2 = a

10 - 2 = 8

Answer: Option C. a = 8

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

8 0
3 years ago
Read 2 more answers
At work, Elon takes a break 1/5​​ of each hour he works. He also takes a lunch break for 1/2​​ of an hour each day he works. Elo
Anton [14]

Answer:

h=50\ hours

Step-by-step explanation:

Let

h -----> the number of hours, Elon works during one 5​-day work week

we know that

12\frac{1}{2}\ h=\frac{12*2+1}{2}=\frac{25}{2}\ h

Elon’s break time must be equal to 1/2​​ of an hour multiplied by 5 days plus  1/5​​ multiplied by the total hours h

so

\frac{25}{2}=5(\frac{1}{2})+\frac{1}{5}h

Solve for h

Multiply by 10 both sides to remove the fraction

125=25+2h

2h=125-25

2h=100

h=50\ hours

8 0
3 years ago
Other questions:
  • Jamal wrote the following statements:
    13·1 answer
  • A 6-meter pole is supported by guy wires that are anchored to the ground as shown. What is sin D?
    15·2 answers
  • What is the surface area of the prism<br> A. 180<br> B. 204<br> C. 120<br> D. 192
    9·1 answer
  • Question 32: Please help, a boat travels directly from Dock A to Dock B without stopping at Dock C along the way. About how many
    8·2 answers
  • Find the area to this
    13·1 answer
  • F(x)=16^X<br> 1. F(x)=4 x/4<br> 2.f(x)=2^4x<br> 3. F(x)=2 x/4<br> 4. F(x)=4^4x
    15·1 answer
  • Timothy swam 24 laps . Frank swam 72 laps. How many times as many laps did frank swim than timothy?
    6·1 answer
  • Review of Unit 6 Measurement:
    15·1 answer
  • ABCD is a quadrilateral work out CD
    12·1 answer
  • This Histogram shows the average speed in miles per hour of cars traveling along a state highway one afternoon. Which informatio
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!