It has been suggested that no more than a quarter of Americans who invest in stocks have

Question:

It has been suggested that no more than a quarter of Americans who invest in have even a basic knowledge of investing. To investigate, Money Magazine and the Vanguard Group conducted a study in which 1555 investors were selected from across the United States and given a simple quiz on investing (source: ifa.com). If 423 of the investors who took the quiz received a passing score, would this be sufficient sample evidence to reject a null hypothesis that no more than 25% of the population of all investors would receive a passing score on the quiz? Use a significance level of 5%.
a. Show the null and alternative hypotheses.
b. Based on the sample result, should you reject the null hypothesis? Explain. Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...