Answer:
The answer is below
Explanation:
a)
Given that mean (μ) = $1500, standard deviation (σ) = $200, sample size (n) = 100
confidence (C) = 95% = 0.95
α = 1 - C = 1 - 0.95 = 0.05
α/2 = 0.05 / 2 = 0.025
The z score that corresponds with 0.475 (0.5 - 0.025) is 1.96. Therefore the margin of error (E) is:

The confidence interval = (μ ± E) = (1500 ± 39.2) = (1500 - 39.2, 1500 + 39.2) = (1460.8, 1539.2)
The confidence interval is between $1460.8 and $1539.2.
b) Given that mean (μ) = $1500, standard deviation for 100 samples = σ /√n = $200,
confidence (C) = 95% = 0.95

The confidence interval = (μ ± E) = (1500 ± 392) = (1500 - 392, 1500 + 392) = (1108, 1892)
The confidence interval is between $1108 and $1892.
Answer:
D. obtaining a commitment from the customer.
Explanation:
Closing a sale is the equivalent of making a sale.
To consider a sale done, you need to have a commitment from the customer to buy the product/service you're offering. That usually mean receiving money or at least firming a binding contract.
None of the other options is describing a complete sale. A and C are potential leads/sales... while B if of course the opposite of closing a sale.
A time horizon<span> is the length of </span>time<span> over which an investment is made or held before it is ended. </span>Time horizons<span> can range from seconds, in the case of a day trader, all the way up to decades for a buy-and-hold investor or an individual who is investing in a retirement plan.</span>
Answer:
Normal good
Explanation:
Income effect Is change in quantity demanded when the consumers purchasing power change as a result of a change in real income.
Substitution effect is when quantity demanded falls as a result of rise in price of a good which leads consumers to purchase cheaper alternatives.
A normal good is a good whose demand increases as income increases.
If the price of a normal good falls, the real purchasing power of the consumer increases and the consumer buys more of the good. Also, the consumer substituites from more expensive alternative goods to the more cheap normal good. The income and substitution effect both move in the same direction.