Stock prices: The Standard and Poor's (S&P) 500 is a group of 500 large companies traded on the New York Stock Exchange. Following are prices, in dollars, for one day for a random sample of eight stocks.53.55 84.25 201.94 24.68 53.4784.86 8.11 74.23 Send data to ExcelAssume the population standard deviation is =σ54.Part: 0 / 20 of 2 Parts CompletePart 1 of 2(a) Explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval.It is necessary to check whether the population is approximately normal because ▼(Choose one).

Stock prices, as measured by the S&P 500 index, have:  declined substantially since they peaked in the mid 1980s.   risen smoothly over time.                     been quite volatile over time.   not changed much over time.

In what way can the general state of the economy affect a stock’s price?Group of answer choicesBy increasing supply or demandBy bringing together a balanced portfolioBy making investment information available to the general publicBy filtering out poor investments

What is the stock market?

A common stock's value is typically set at a low amount and has little meaning today other than being used to by some states to assess fees. (Enter only one word per blank.)

The market price of common stock is based on investors’ expectations about future earnings. This statement is