A is the answer to this question
Answer:
<u>Quality of life is a hidden variable because it cannot be measured directly but must be inferred from measurable variables such as wealth, success, and environment.
</u>
Explanation:
<u>Hidden variable:</u> The term "hidden variable" is described as the proposition that specific "statistical models" of any physical systems, for example, Quantum mechanics are being incomplete inherently, and along with this the apparent randomness of a particular system is being dependent not on "collapsing functions" but instead it is due to any unmeasurable or unseen or hidden variables.
Answer:
E. if technological advances occur is the correct answer.
Explanation:
Answer: Sales promotion
Explanation:
Promotion includes all the techniques sellers use to motivate/persuade people to purchase their product or services.
Sales promotion is a part of the promotional mix that uses media and non-media outlets to improve product awareness, increase consumer demands and marketability. It helps in stimulating consumers' interest in a product.
Sales promotion programs are designed to enhance personal selling, advertising, public relations, and other promotional efforts.
Sales promotions can take place both within/inside and outside an organization. It helps to attract new customers, with old existing customers and ease competition.
Answer: 
Explanation:
If r is the number of successes out of n trials , then the sample proportion of success = 
For binomial experiment , if the population probability of success p on a single trial is not given , then the best point estimate for probability of success p on a single trial is the sample proportion of successes.
i.e. a point estimate for the probability of success p on a single trial :
Hence, a point estimate for the probability of success p on a single trial =
