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Pavel [41]
3 years ago
10

A researcher wants to conduct a study to see if playing chess improves memory. The researcher finds 50 individuals who play ches

s regularly and 50 that do not. Each of the 100 individuals are given a questionnaire designed to determine memory level. If the 100 individuals did not know they were participating in the study, which statement about the study is correct?.
SAT
1 answer:
inna [77]3 years ago
6 0

Answer:

This is an observational study

Explanation:

just took the test

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As the price of gummy bears rises from $2. 60 to $3 , what are the price elasticities of demand of sugar-free gummy bears and of
NISA [10]

The price elasticities of demand of sugar-free gummy bears and of ordinary gummy bears is -0.8 and -2.3 respectively.

<h3>How to calculate price elasticity</h3>

Change in price of gummy bears = $2. 60 to $3

Elasticity of demand of sugar-free gummy bears =

[(273-379 / (273+379)/2] ÷ [(3.00-2.60)/(3.00+2.60) / 2]

= [-18/166] / [0.4/2.8]

= -0.10843373493975 / 0.14285714285714

= - 0.75903614457826

Approximately, -0.8

Elasticity of demand of regular gummy bears:

Sugar free = [(273-379) / (273+379)/2] ÷ (3.00 +2.60) / 2]

= [-106/326] / [0.4/2.8]

= -0.32515337423312 / 0.14285714285714

= -2.2760736196318

Approximately, -2.3

Learn more about price elasticity:

brainly.com/question/24961010

7 0
2 years ago
Hydrogen peroxide breaks down to form water and oxygen gas. which observation is evidence that a chemical reaction has occurred?
Kitty [74]

Answer:

change in amount of liquid, change in smell or color, bubbling, foaming, fizzing

Explanation:

5 0
2 years ago
What must be the value of x so that lines c and d are parallel lines cut by transversal p? 12 18 81 99.
polet [3.4K]

Answer:18

Explanation:

5 0
2 years ago
3. How does the stock market influence the finances of individuals, even if they don't personally invest?
Sphinxa [80]
 If a stock market crash were to occur, then stockholders would lose some, if not all oftheir money. This means that companies are not able to generate investment money forexpansion. Companies then might experience lower profits because people do not have<span>enough money to buy goods, and then they may have to lay-off their workers.</span>
3 0
3 years ago
economics tells us that that we are all consumers. a consumer is someone who uses economic goods and services. name one economic
motikmotik

An Economic Good that I have used today is a laptop and an Economic Service that I have used today is bank.

Economics can be defined as a field of science that is focused on the analysis and examination of various principles that influence the production, demand and supply of goods and services.

Another purpose for the studying economics is to examine certain principles that influence the production of goods and services.

So, we can conclude that economics states that we are all consumers and a consumer is someone who uses both economic goods and services.

To learn more about Economic Goods,

brainly.com/question/13167381

#SPJ4

3 0
2 years ago
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