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m_a_m_a [10]
3 years ago
6

Do children prefer purple juice or yellow juice? Two different supplements, which have no effect on taste, are used on identical

juice to produce purple juice or yellow juice. Volunteer children are randomly assigned to either purple juice or yellow juice, and they are asked to rate the juice on a scale from 1 point to 10 points. Is blinding demonstrated in the experiment? No, because the volunteers do not know the color juice they are getting Yes, by having the experimenter in a separate room pick one of the two containers at random and having a juice pulled from that container remotely Yes, by having the statistician analyzing the results not know which volunteer sampled which juice Yes, by having the volunteers wear a blindfold while drinking the juice out of the container, so that they don't know the color juice they are tasting No, because the volunteers know whether they are drinking purple juice or yellow juice
Mathematics
2 answers:
Archy [21]3 years ago
8 0

Answer:

Yes, by having the experimenter in a separate room pick one of the two containers at random and having a juice pulled from that container remotely

Step-by-step explanation:

hope this helped

QveST [7]3 years ago
8 0

f.  No, because the volunteers know whether they are drinking purple juice or yellow juice

I took the quiz and got it right :)

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The number of free song downloads is determined using a ratio when you purchase 40 songs you get 24 free song downloads how many
natka813 [3]
34 because 24 is 6x4 and 40 is 6.5 but you obviously round up so 7x6 so18 free songs is is 6x3 you just take away 6 to your number so 40-6+=34 so 34
3 0
3 years ago
The length, with, and height of a rectangular prism can be represented by the expressions (x+3),(x+7),and(x-1). Write an express
joja [24]

Answer: 6x² + 36x + 22

Step-by-step explanation:2 faces  (x + 3) by (x + 7), area of both these faces 2(x+3)*(x + 7)

2 faces  (x + 3) by (x - 1), area of both these faces 2(x+3)*(x - 1)

2 faces  (x -1 ) by (x + 7), area of both these faces 2(x-1)*(x + 7)

Whole surface area is

2(x+3)*(x + 7) + 2(x+3)*(x - 1) + 2(x-1)*(x + 7) =

=2(x² + 3x +7x +21) + 2(x² +3x -x - 3) + 2(x² - x +7x -7)=

=2x² + 20x +42 + 2x² + 4x - 6 + 2x² + 12x -14 =

= 6x² + 36x + 22

5 0
2 years ago
Read 2 more answers
You have a bag of six marbles five are red and one is blue if you pick one without looking what color will you most likely get w
alekssr [168]
You are most likely to pick up a red because the quantity is more and a blue marble can be anywhere
7 0
3 years ago
A consulting firm had predicted that 35% of the employees at a large firm would take advantage of a new company Credit Union, bu
m_a_m_a [10]

Answer:

a) 0.4770

b) 3.9945

c) z-statistics seem a large value

Step-by-step explanation:

<u>a. Find the standard deviation of the sample proportion based on the null hypothesis</u>

Based on the null hypothesis:

p_{0}: 0.35

and the standard deviation σ = \sqrt{p_{0} *(1-p_{0}) } =\sqrt{0.35 *0.65 } ≈0.4770

<u>b. Find the z statistic</u>

z-statistic is calculated as follows:

z=\frac{X-p_{o} }{\frac{s}{\sqrt{N} } } where

  • X is the proportion of employees in the survey who take advantage of the Credit Union (\frac{138}{300}=0.46)
  • p_{0} is the proportion in null hypothesis (0.35)
  • s is the standard deviation (0.4770)
  • N is the sample size (300)

putting the numbers in the formula:

z=\frac{0.46-0.35} }{\frac{0.4770}{\sqrt{300} } } = 3.9945

<u>c. Does the z statistic seem like a particularly large or small value?</u>

z-statistics seem a large value, which will cause us to reject the null hypothesis.

4 0
3 years ago
What are two equivalent ratios of 12:7
kozerog [31]
24:14 and 36:21 are both equivalent ratios to 12:7
4 0
3 years ago
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