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
oksano4ka [1.4K]
3 years ago
15

A researcher asks participants to taste each of three meals and to choose the one they like best. The same foods are in each mea

l, however the calorie total of each meal is different. One is low in calories, one is moderate in calories and one is high in calories. Based on the observed frequencies given below, what is an appropriate conclusion for this test at a .05 level of significance?
Type of Meal
Low Calorie Moderate Calorie High Calorie
fo 6 7 17
fe 10 10 10

A. Participants liked the high calorie meal more than the low calorie meal.
B. Participants liked the low calorie meal less than the moderate calorie meal.
C. Participants liked the high calorie meal more than was expected.
D. All of the above
Mathematics
1 answer:
Margarita [4]3 years ago
3 0

Answer:

D. All of the above

Step-by-step explanation:

By the given data, some persons were in the experiment and each of them was given with three meals, Low Calorie, Moderate Calorie and High Calorie. They results for the meal they liked is as below:

Low Calorie Meal got likes = 6

Moderate Calorie Meal got likes = 7

High Calorie Meal got likes = 17

so,

Option A is correct as High Calorie meal got 17 likes while Low Calorie meal got 6 likes.

Option B is also correct as Low Calorie meal got 6 likes while Moderate Calorie meal got 7 likes.

Option C is correct too as High Calorie meal got largest number of likes even more than the double of Low calorie and Moderate calorie meal so it was more than expected.

You might be interested in
PLEASE HELP ASAP<br><br>Solve. <br><br>y &gt; 2x + 2<br>y ≤ -3/2 x - 5
Fynjy0 [20]
2x + 2 < - \frac{3}{2} x - 5 \\ 2x + \frac{3}{2} x < - 5 - 2 \\ 3.5x < - 7 \\ x< - 2
x < - 2 \\ x < \frac{y - 2}{2}
-2 = \frac{y - 2}{2} \\ y=-2
7 0
3 years ago
What is the greatest common factor of 75 120 90?​
Lilit [14]

Answer:

15 :)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Consecutive angles in a parallelogram are supplementary. What is the value of x?
Naddika [18.5K]

Step-by-step explanation:

HERE,

\angle{PQR=20+2x  } ⠀

\angle{ QRS=6x } ⠀

we know that,

sum of consecutive angle of a parallelogram =180

so,

According to the question,

\angle{PQR}+\angle{QRS}=180 ⠀

\tt{20+2x+6x=180  } ⠀

\tt{8x+20=180  } ⠀

\tt{8x=180-20  } ⠀

\tt{8x=160  } ⠀

\tt{x=\dfrac{160}{20}  } ⠀

\tt{ x=20 } ⠀

8 0
3 years ago
In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equa
arlik [135]

Answer:

Yes. At this significance level, there is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The significance level is 0.05.</em>

<em>The data is:</em>

<em>Brand X: 91, 100, 88, 89</em>

<em>Brand Y: 99, 96, 94, 99</em>

<em>Brand Z: 83, 88, 89, 76</em>

We have to check if there is a significant difference between the absorbency rating of each brand.

Null hypothesis: all means are equal

H_0:\mu_x=\mu_y=\mu_z

Alternative hypothesis: the means are not equal

H_a: \mu_x\neq\mu_y\neq\mu_z

We have to apply a one-way ANOVA

We start by calculating the standard deviation for each brand:

s_x^2=30,\,\,s_y^2=6,\,\,s_z^2=35.33

Then, we calculate the mean standard error (MSE):

MSE=(\sum s_i^2)/a=(30+6+35.33)/3=71.33/3=23.78

Now, we calculate the mean square between (MSB), but we previously have to know the sample means and the mean of the sample means:

M_x=92,\,\,M_y=97,\,\,M_z=84\\\\M=(92+97+84)/3=91

The MSB is then:

s^2=\dfrac{\sum(M_i-M)^2}{N-1}\\\\\\s^2=\dfrac{(92-91)^2+(97-91)^2+(84-91)^2}{3-1}\\\\\\s^2=\dfrac{1+36+49}{2}=\dfrac{86}{2}=43\\\\\\\\MSB=ns^2=4*43=172

Now we calculate the F statistic as:

F=MSB/MSE=172/23.78=7.23

The degrees of freedom of the numerator are:

dfn=a-1=3-1=2

The degrees of freedom of the denominator are:

dfd=N-a=3*4-3=12-3=9

The P-value of F=7.23, dfn=2 and dfd=9 is:

P-value=P(F>7.23)=0.01342

As the P-value (0.013) is smaller than the significance level (0.05), the null hypothesis is rejected.

There is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

3 0
3 years ago
Solution for 3^3x=9^x+4
Aliun [14]
3^3+9=77 if I'm wrong I'm sorry I just guess
3 0
3 years ago
Other questions:
  • In Detroit the high temperature in degrees Fahrenheit for five days in January were -12 , -8 , -3 , 6 , -15. What was the averag
    13·2 answers
  • -2.75 + ( -3.25 ) + 5
    12·2 answers
  • 22. Solve for ‘x'.<br> 15<br> 12<br> 12<br> /15<br> 10<br> a. 3<br> b. 10<br> c. 28
    9·1 answer
  • Which of the following is equal to 142 ÷ 2? A. (100 ÷ 40) + (40 ÷ 2) + (2 ÷ 2) B. (100 + 2) ÷ (40 + 2) ÷ (2 + 2) C. (100 ÷ 2) -
    7·2 answers
  • A coffee grinder uses a current of 1.20 A and has a resistance of 100 ohms. Calculate the voltage explain
    10·2 answers
  • A density curve for all the possible weights between 0 pounds and 10 pounds is in the shape of a rectangle. What is the height o
    7·1 answer
  • How do I get the area of a circle?<br>​
    12·2 answers
  • At an outdoor concert, there were 1,200 tickets sold. The tickets cost $20 each for lawn seats and $45 each for pavillion ticket
    11·1 answer
  • Just help me. just want a percentage. plsss
    7·1 answer
  • If you have 54/4 how does it equal 13.5
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!