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Proportion Sample Size

This calculator determines a sample size to select to meet certain criteria related to a confidence percentage, reliability percentage, and a p value proportion. Simply enter your values not using percentage signs. This works whether p^ is known or not known.

Social Security and Covered Compensation

Calculates an estimated monthly Social Security Benefit based on a smooth estimate of pay over your work history.

Also calculates a covered compensation amount based on a year of birth

Also calculates a covered compensation amount based on a year of birth

Work

Solves for any of the 3 variables, Work (W), Force (F) and Distance (d) in the work formula

Work Word Problems

Given Person or Object A doing a job in (r) units of time and Person or Object B doing a job in (s) units of time, this calculates how long it would take if they combined to do the job.

the square root of twice a number is 4 less than the number

Ruth prepares 7 kilograms of dough every hour she works at the bakery. How much dough did Ruth prepa

There are 32 female performers in a dance recital. The ratio of men to women is 3:8. How many men ar

Selling a Business and Reinvesting Proceeds

A dad gave his 3 sons each the same amount of money in an envelope. He took $20 from one son for get

The cost of renting a rototiller is $19.50 for the first hour and $7.95 for each additional hour. Ho

12.66 g of calcium are heated in air,17.73 g of calcium oxide is formed.The percent oxygen in the co

the sum of n and twice n is 12

two mechanics worked on a car. the first mechanic worked for 10 hours, and the second mechanic worke

Dan makes 11 an hour working at the local grocery store. Over the past year he has saved 137.50 towa

2 consecutive even integers that equal 118

You have a total of 42 math and science problems for homework. You have 10 more math problems than s

Sally can paint a room in 7 hours while it takes Steve 6 hours to paint the same room. How long woul

You collect a total of 75 in donations from three people. The three donations are in the ratio 4:4:7

A house valued at 70,000 in 1989 increased in value to 125,000 in 2000. Find a function which gives

Melanie started working in her garden at 8:25 a.m. She took a break at 11:10 a.m. How many minutes d

Will earned 9.50 an hour. He worked 40 hours one week, how much will he make?

The ratio of men to women working for a company is 4 to 7. If there are 319 employees total, how man

In 2000 a company increased its workforce by 50%. In 2001 it decreased its workforce by 50%. How doe

An experienced accountant can balance the books twice as fast as a new accountant. Working together

An employee earns $7.00 an hour for the first 35 hours worked in a week and $10.50 for any hours ove

writing and solving equations

writing and solving equations

A bag contains 3 red marbles and 4 blue marbles. a marble is taken at random and replaced. another m

A random sample of n = 10 flash light batteries with a mean operating life X=5 hr. And a sample stan

A random sample of STAT200 weekly study times in hours is as follows: 2 15 15 18 30 Find the sam

Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opp

Assume that you make random guesses for 5 true-or-false questions

Let P(n) and S(n) denote the product and the sum, respectively, of the digits of the integer n. For

I HAVE $11.60, all dimes and quarters, in my pocket. I have 32 more dimes than quarters. how many di

Two mechanics worked on a car. the first mechanic worked for 5 hours snd the second mechanic worked

At the end of the day, a bakery had 1/2 of a pie left over. The 4 employees each took home the same

Blanca works as a salesperson and earns a base salary of $72 per week plus a commission of 12% of al

Jim works for his dad and earns $400 every week plus $22 for every chair (c) he sells. Write an equa

Mimis math class starts at 9:00 A.M. and lasts for 1 hour and 55 minutes. After math class, Mimi has

Round 12.4263 to the nearest cent

Yael worked out at a gym for 2 hours. Her workout consisted of stretching for 21 minutes,jogging for

The Lakers recently scored 81 points. Their points came from 2 and 3 point baskets. If they made 39

Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,

Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,

Penelope and Owen work at a furniture store. Penelope is paid $215 per week plus 3.5% of her total s

Finance

Is it correct to word "10% * 50 + 50" as "10% upper 50"?

The ratio of men to women working for a company is 3 to 4. If there are 81 men working for the compa

Diana earns $8.50 working as a lifeguard. Write an equation to find Dianas money earned m for any nu

A coat is on sale for 35% off. The regular price of the coat is p. Write and simplify and expression

A plumber charges $50 to visit a house plus $40 for every hour of work.

porportion problems

Frank is a plumber who charges a $35 service charge and $15 per hour for his plumbing services. Find

Problems Involving Rational Expressions

Problems Involving Rational Expressions

Adam, Bethany, and Carla own a painting company. To paint a particular home, Adam estimates it woul

Math Problem Solving (Help Please)

You rake leaves for five hours. You get paid $5.75 every hour. How much did you earn?

Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,

Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,

Updates:

A group of workers can plant 72 acres in 8 days what is the rate in acres per a day

Your clothes washer stopped working during the spin cycle and you need to get a person in to fix the

Solving word problems with the matrix method?

In Super Bowl XXXV, the total number of points scored was 41. The winning team outscored the losing

Sara opened an account with $800 and withdrew $20 per week. Jordan opened an account with $500 and d

Ning prepared 16 kilograms of dough after working 4 hours. How many hours did Ning work if he prepar

can someone help me with how to work out this word problem?

can someone help me with how to work out this word problem?

can someone help me with how to work out this word problem?