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almond37 [142]
2 years ago
9

Stacy Wood at the Moore School of Business in South Carolina is studying what people crave, familiar food or new food, during pe

riods of change in their lives. For her samples, those that self identified themselves as in a period of change, chose the new item 70% of the time, whereas students who self-identified themselves as not in a period of change, chose the new item 40% of the time. For the part that is listed in bold, what part of the field of statistics is this?
a. description
b. design
c. inference
Mathematics
1 answer:
Volgvan2 years ago
8 0

Answer:

a. description

Step-by-step explanation:

Description statistics is used to summarize sample or population by determining some of its parameters like mean, variance, standard deviation, proportion etc.

Stacy Wood at the Moore School of Business in South Carolina studied her samples and find sample proportions of a specific characteristic (proportion of people who chose new item) from two different samples of people who are identifying themselfves in a period of change and people who are not)

For example, if she further continues the study and finds with 95% confidence that proportion of people who are in a perid of change choses new item are higher than the proportion of people who are not in a period of change, then she would have made inferential statistics.  

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Easiest way to calculate 22% mark up from a cost of say 39.99
satela [25.4K]

Answer:

The markup amount on the cost 39.99 $ will be: 8.78 $

Step-by-step explanation:

Given

  • The cost = 39.99 (Let say in $)
  • Mark up = 22%

As

22% = 0.22

The markup of 22% on the cost can be calculated by multiplying the cost by 22% or 0.22

so

Markup amount = 0.22 × 39.99

                           = 8.78 $

Therefore, the markup amount on the cost 39.99 $ will be: 8.78 $

6 0
2 years ago
ASAPPPP
DedPeter [7]

Answer:

C. Subtraction property of equality

Step-by-step explanation:

6 0
2 years ago
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Each week, Rosario drives to an ice-skating rink that is 60 miles away. The round-trip takes 2.75 hours. If he averages 55 miles
vazorg [7]

Answer:

The answer to your question is x = 4d/t - S1

Step-by-step explanation:

Data

total time = t = 2.75 hours

Initial speed = S1 = 55 mi/h

Final speed = x

distance = d = 60 mi

Formula

speed = distance / time

Average speed = (Initial speed + final speed)/2  or

                          = (S1 + x)/2

Substitution

                             (S1 + x)/2 = 2(d) / t

Solve for x

                             x = (2d/t)2 - S1

Simplification and result

                              x = 4d/t - S1

3 0
2 years ago
Find the length of side y
Serggg [28]

Answer:

\large\boxed{y=76.3359\ cm\approx76.3\ cm}

Step-by-step explanation:

Use cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have

adjacent=73\ cm\\hypotenuse=y

and the angle 17°.

\cos17^o\approx0.9563

Substitute:

\dfrac{73}{y}=0.9563             <em>convert the decimal to the fraction</em>

\dfrac{73}{y}=\dfrac{9563}{10000}          <em>cross multiply</em>

9563y=730000           <em>divide both sides by 9563</em>

y=\dfrac{730000}{9563}

y\approx76.3359

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3 years ago
Triangle ABC and Triangle XYZ are similar. If the measure of angle A-30° and the measure of angle B-45 ,
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D. XYZ is obtuse

Step-by-step explanation:


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