Answer:
(a) E(X) = 3
(b) Var(X) = 12.1067
Explanation:
(a) E[X]
E[X]T = E[X]T=A + E[X]T=B + E[X]T=C
= (2.6 + 3 + 3.4)/3
= 2.6 (1/3) + 3(1/3) + 3.4(1/3)
= 2.6/3 + 1 + 3.4/3
= 3
(b) Var (X) = E[X²]−(E[X])²
Recall that if Y ∼ Pois(λ), then E[Y 2] = λ+λ2. This implies that
E[X²] = [(2.6 + 2.6²) + (3 + 3²) + (3.4 + 3.4²)]/3
= (9.36 + 12 + 14.96)/3
= 36.32/3
= 12.1067
Var(X) = E[X²]−(E[X])²
= 12 - 3²
= 12.1067 - 9
= 3.1067
Answer:
d. cost-less will go out of business, and durable will gain higher power over its customers.
Explanation:
Durable ceramics, inc will only reduce its prices if this is to its advantage. We live in a capitalist world where companies make decisions based on their own benefits. In this case, in order for Durable ceramics, inc to lower its prices and have no losses, it would expand its sales. In this way, Durable ceramics, inc would be able to capture customers from its competitors, and could make them go bankrupt.
Thus, we can conclude that if Durable ceramics, inc reduced its prices, Cost-Less would go out of business and Durable would gain greater power over its customers.
The amount of money you have in your account
Answer:
(C) the forces of supply and demand
Explanation:
In a perfectly competitive industry, no single buyer nor seller will be able to influence prices thus marking the forces of demand and supply (the invisible hand) the determinant of pricing. Each buyer or seller will only account for a minute portion of total demand and supply thus making their influence of market price insignificant.
Options (A), (B) and (D) are incorrect as the largest firms, individual sellers and individual buyers do not influence pricing over price in a perfectly competitive market.
Answer:
Software as a Service (SaaS)
Explanation:
Software as a service (SaaS) allows users connected to cloud-based applications over the Internet and use them. Some common examples are email, calendars and office tools (such as Microsoft Office 365).
SaaS offers a comprehensive software solution that is acquired from a cloud service provider through a pay-per-use model. It is possible to rent the use of an application for the organization and users connect to it through the Internet, usually with a web browser. All underlying infrastructure, middleware, software and application data are located in the provider's data center. The service provider manages the hardware and software and, with the appropriate service contract, will also guarantee the availability and security of the application and data. SaaS allows an organization to get started and can run applications with a minimal initial cost.
