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
Vitek1552 [10]
3 years ago
12

Researchers in education are performing a study to see if listening to soothing music while taking a standardized math test incr

eases the mean test score. The hypotheses are H 0 : mu=79 versus H a : mu>79 , and the p-value for the hypothesis test was 0.035.
At the 5 % significance level , what should the researchers conclude?


1. There is sufficient evidence to conclude that listening to soothing sounds increases the mean test score.


2. There is sufficient evidence to conclude that listening to soothing sounds decreases the mean test score.


3. There is insufficient evidence to conclude that listening to soothing sounds decreases the mean test score.

4. none of the above
Mathematics
1 answer:
Goshia [24]3 years ago
4 0

Answer:

1. There is sufficient evidence to conclude that listening to soothing sounds increases the mean test score.

Step-by-step explanation:

A  p - value less than 0.05  means that the test hypothesis is false or rejected.

In this question the test hypothesis is H 0 : mu=79  which is false as p-value is 0.035.

Whenever the p- value is less than the significance level H0 is rejected.

Hence the null hypothesis is rejected.

Therefore only choice 1 is correct.

There is  sufficient evidence to conclude that listening to soothing sounds increases the mean test score.

There is sufficient evidence to support the claim.

You might be interested in
The graph of a function is shown: Which of the following correctly identifies the set of outputs
earnstyle [38]

The inputs are the x values and the outputs are the y values


outputs : 4,3,-1,-3

Choice A

8 0
2 years ago
Read 2 more answers
Help w this plsss,!,!,, 20pointsss
Kay [80]

Answer:

Area = Length × width

16 = (3x +2 ) × ( x)

16 = 3x² +2x

3x² +2x -16=0

( 3x+8 ) ( x -2 ) =0

3x +8=0 —> 3x = – 8 —> x = – 8/3 —> x = – 2.6

x-2=0 —> x = 2

I hope I helped you^_^

5 0
2 years ago
Can someone please help mee
castortr0y [4]

Answer:

f(z) = z^2-3z+2

f(x+1) = x^2-x

f(\sqrt{2}+1) = 2-\sqrt{2}

Step-by-step explanation:

f(x+1) = x^2+2x+1-3x-3+2

f(\sqrt{2}+1) = 2+2\sqrt{2}+1-3\sqrt{2}-3+2

7 0
1 year ago
Jamil hiked 7 miles. Hannah hiked
lidiya [134]

Answer:

7 miles × 1

Step-by-step explanation:

If Jamil hiked 7 miles, and Hannah walked ONE times as far then Hannah walked the same distance

If Hannah were to walk 2 times then you double the amount Jamil hikes, but since Hannah only walked 1 times more, the answer stays the same so:

7 miles × 1 times as far = Hannah hiked 7 miles

6 0
3 years ago
Please help with by finding the surface area of numbers 122 to 124 which are the top one ands please read 125 a and 126 to find
Annette [7]
Surface area of cylinder is 2 (pi)rh+2(pi)r^2
this is the area of the side [(2 (pi)rh] and the two circles together [2 (pi)r^2]

122. r=24
h=15
2 (3.14)24×15+2 (3.14)24^2
6.28×24×15+6.28×24^2
2260.8+3617.28
5878.08mm

123. r=5
h=8
2 (3.14)5×8+2 (3.14)5^2
6.28×5×8+6.28×5^2
251.2+157
408.2cm

124. the surface area of a cylinder that has a hole is going to be
surface area of big cylinder-2small area circles (the holes) + the area of the holes sides

hopefully that isn't too confusing

big radius: 8
height: 14

little radius: 2.5
height: 14

2 (3.14)8×14+2 (3.14)8^2
6.28×8×14+6.28×8^2
703.36+401.92

1105.28in (area of big cylinder)

2 (3.14)2.5^2 (two small holes)
6.28×2.5^2
39.25in (area of holes)

2 (3.14)×2.5×14 (area of side)
6.28×2.5×14
219.8in

1105.28-39.25+219.8
1066.03+219.8

1285.83in total surface area

125. h=20
r=6 since diameter is a foot or 12 in, half of that is 6
2 (3.14)6×20+2 (3.14)6^2
6.28×6×20+6.28×6^2
753.6+226.08
979.68in

126. first radius= 10
first height = 6

second radius= 6
second height= 10

2 (3.14)10×6+2 (3.14)10^2
6.28×10×6+6.28×10^2
376.8+628
1004.8in (surface area of first cylinder)

2 (3.14)6×10+2 (3.14)6^2
6.28×6×10+6.28×6^2
376.8+226.08
602.88in (surface area of second cylinder)

1004.8-602.88= 401.92

the surface area of the cylinder with radius 10 and height 6 is GREATER that the surface area of the cylinder with radius 6 and height 10..
by 401.92in
8 0
2 years ago
Other questions:
  • What is the volume of this pyramid? 945 cm³ 1260 cm³ 1890 cm³ 2520 cm³ A pyramid with a right triangular base. The right triangu
    11·2 answers
  • Four runners competed in a 10 kilometer relay race. Each runner ran the same distance. What was the distance?
    11·2 answers
  • What is 3/4x24 i need help asap
    12·2 answers
  • A small island is 3 kilometers from the nearest point p on the straight shoreline of a large lake. if a woman on the island can
    8·1 answer
  • How can you estimate 74.3 divided by 8
    11·1 answer
  • coffee which normally sells for $2.19 per pound is now on sale for 5.49 for 3 lb how much is safe per pound by buying the three
    12·1 answer
  • Mia has two more than three times the number of model cars that Orville has. If Orville has c model cars, Which algebraic expres
    7·1 answer
  • Min and Jessica collected 60 plastic bottles. They divided the plastic bottles evenly between them and sold the bottles to a rec
    15·1 answer
  • Two boxes of identical birthday candles are pictured: a 2-ounce box and a 6-ounce box. There are 96 candles in the large box. Ho
    14·1 answer
  • Write an expression that can be used to multiply 6x198 mentally
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!