Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Statistics and Probability Expert

Statistics


Home >> Statistics and Probability

In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that 20% of all stock investors are retired people. In addition, 40% of all adults invest in mutual funds. Suppose a random sample of 25 stock investors is taken.

a. What is the probability that exactly seven are retired people?

b. What is the probability that 10 or more are retired people?

c. How many retired people would you expect to find in a random sample of 25 stock investors?

d. Suppose a random sample of 20 adults is taken. What is the probability that exactly seven adults invested in mutual funds?

e. Suppose a random sample of 20 adults is taken. What is the probability that fewer than six adults invested in mutual funds?

f. Suppose a random sample of 20 adults is taken. What is the probability that none of the adults invested in mutual funds?

g. Suppose a random sample of 20 adults is taken. What is the probability that 12 or more adults invested in mutual funds?

h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91022371

Have any Question?


Related Questions in Statistics and Probability

The weights of ice cream cartons are normally distributed

The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.5 ounces. You randomly select 25 cartons. What is the probability that their mean weight is greater ...

Your client wants to buy a business that provides financial

Your client wants to buy a business that provides financial advice to local small businesses. The firm generated $650,000 in cash flows during the previous year, and the discount rate to value firms in this sector is 11% ...

Williamnbspis interested in knowingnbspwhether or not

William is interested in knowing  whether or not athletics from his team have lower satisfaction with their team on a survey than the known population average survey score of 19  and the known population survey standard ...

The shareholders of a company need to elect six directors

The shareholders of a company need to elect six directors and there are 150,000 shares outstanding. 1). What is the minimum number of shares they need to own to make sure that they can elect at least one director if the ...

1 suppose that in the game of afl the mean total number of

1. Suppose that in the game of AFL the mean total number of points per match is 185 with a standard deviation of 33. Suppose that a season involves 202 matches. If the total points are normally distributed then answer th ...

What are the minimum first quartile median third quartile

What are the minimum, first quartile, median, third quartile, maximum, interquartile range, and range of the data set below? Make a box-and- whisker plot. 25, 25, 30, 35, 45, 45, 50, 55, 60, 60

Jane is an analyst and their company wants to get a return

Jane is an analyst and their company wants to get a return of atleast 7.3% compounded Semi-Annually on their investment. Jane will only have use of the money for 111 Months before the company needs it for another project ...

What is the 99 confidence interval for a sample of 52 seat

What is the 99% confidence interval for a sample of 52 seat belts that have a mean length of 85.6 inches long and a standard deviation of 3.8 inches?

A doctor wants to predict the birth weight of a newborn

A doctor wants to predict the birth weight of a newborn baby (measured in grams) based on the gestational age (measured in weeks) at the time of birth. The doctor uses 11 data points, with births ranging from 29 weeks to ...

Your client is going to be traveling to las vegas in the

Your client is going to be traveling to Las Vegas in the near future and he wants to place some bets on his favorite professional baseball team. To ensure he knows the odds on his bets he wants to know the probability of ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As

Follow Us

© Copyright 2013-14 mywordsolution.com All rights reserved