Mathematics, 08.04.2021 06:40 ReonRamseyz
In 42 of the 64 years from 1950 through 2014,the S& P 500 finished higher after the first five days of trading (in 2011 there was virtually no change). In 37 out of 42 years, the S&P 500 finished higher for the year. Is a good first week a good omen for the upcoming year? The following table gives the first-week and annual performance over this 64-year period.
S&P 500's Annual Performance
First week Higher Lower Total
Higher 37 5 42
Lower 11 11 22
Total 48 16 64
a) If a year is selected at random,
what is the probability that the S&P 500 finished lower for the year?
b) Given that the S&P finished lower after the first five days of trading,
what is the probability that it finished lower for the year?
c) Are the two events "first week performance" and "annual performance"
independent or dependent? Explain why.
Answers: 2
Mathematics, 21.06.2019 14:00
Which graph represents the solution of the inequality?
Answers: 1
Mathematics, 21.06.2019 17:30
Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys
Answers: 2
Mathematics, 21.06.2019 18:30
You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?
Answers: 3
Mathematics, 21.06.2019 19:30
If (17, 4) is an ordered pair of the inverse of f(x), which of the following is an ordered pair of the function f(x)? a. (17,4) b. (4.17) c. (4,0) d. 0,17)
Answers: 2
In 42 of the 64 years from 1950 through 2014,the S& P 500 finished higher after the first five d...
Chemistry, 08.09.2019 22:10
Biology, 08.09.2019 22:10
History, 08.09.2019 22:10
Mathematics, 08.09.2019 22:20
Mathematics, 08.09.2019 22:20
Mathematics, 08.09.2019 22:20
Mathematics, 08.09.2019 22:20