The proportion of left-handed people in the general, Ask an Expert

Statistics

The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed.

a. Since the sample proportion has a normal distribution, its values follow the Standard Deviation Rule. What interval is almost certain (probability .997) to contain the sample proportion of left-handed people?

b. In a sample of 225 people, would it be unusual to find that 40 people in the sample are left-handed?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91022477

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Anbsphow much money would you have to invest today to

a. How much money would you have to invest today to accumulate ?$3,100 after 4 years if the rate of return on your investment is 15?%? b. What is the present value of ?$3,100 that you will receive after 4 years if ...

Jennifer currently has 500 in an account with an annual

Jennifer currently has $500 in an account with an annual rate of return of 4.3%. She wants to have $6000 for a trip to Alaska when she graduates in 4 years. How much will she have to save each month to afford her trip?

Your companys revenues were 3 million this year you paid

Your company's revenues were $3 million this year. You paid out $500,000 in salaries and your only other cash outflow was the purchase of a piece of construction equipment for $1 million that is to be depreciated to a ze ...

Using a telephone survey of 400 randomly selected

Using a telephone survey of 400 randomly selected registered voters, he solicits both their party identification and whether or not they had read the newspaper that day. The results are displayed in the following cross-t ...

Suppose you want to estimate the proportion of traditional

Suppose you want to estimate the proportion of traditional college on your campus who own their own car. Based on some research on other campuses, you believe the proportion will be near 25%. What sample size is needed i ...

A clinical psychologist is the primary therapist for 18

A clinical psychologist is the primary therapist for 18 patients. She randomly selects a sample of 3 patients to be in her study. How many different samples of this size can be selected from this population of 18 patient ...

Gala apples sampled at random from a specific orchard in

Gala apples sampled at random from a specific orchard in New Zealand have a mean weight of μ= 147g with a variance of σ2= 841g^2, and the weights follow a normal distribution quite well. The grower wants to sell the appl ...

What are some ways being able to visually see data in a

What are some ways being able to visually see data in a graphic presentation beneficial?

What types processes or procedures support project

What types processes or procedures support project management, continuous improvement and innovative initiatives?

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 ...

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

Recent Questions

Ask Statistics and Probability Expert