Calculation of the mean and standard deviation

Assignment Help Mathematics
Reference no: EM13799605

1.A research study performed at checkout lines at Publix Supermarket in South Florida revealed that between 4pm and 7pm on weekdays there is an average of 4 customers waiting in line. What is the probability that you visit a Publix today during this period and find:
No customers waiting?
4 customers waiting?
4 or fewer customers waiting?
4 or more customers waiting?

2. A study on crime indicated that 3.1 car thefts occur each minute in the USA. Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.

Calculate the probability that exactly 4 thefts occur in a minute
What is the probability there are no thefts in a minute?
What is the probability there is at least 1 theft in a minute?

3. The annual sales of playground equipment follow the normal distribution. However, the mean and standard deviation are unknown. 40% of the time sales are more than 470,000 and 10% of the time sales are more than 500,000.
Calculate the mean and standard deviation.

Reference no: EM13799605

Questions Cloud

Major components of statistical methodology : Discuss the differences among the three major components of statistical methodology (descriptive statistics, statistical inference, and predictive statistics).
Occupational exposure to blood borne pathogens standard : Choose one of the following regulations or statutes that impact health care. The Occupational Exposure to Blood borne Pathogens Standard
Opening factorys outside japan : Why are so many Japanese companies opening factorys outside Japan?
Atmospheric circulation patterns : Wind is another name for atmospheric circulation patterns. Atmospheric circulation patterns keep the temperature of an area constant. Atmospheric circulation patterns are often responsible for hurricanes.
Calculation of the mean and standard deviation : Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.
Right watering and drainage system : However, when people realized that with the right watering and drainage system this area could become productive farmland, there arose ecological problems. The conversion of the prairie to farmland is the root cause of many ecological problems in ..
Rock and mineral lab : The following minerals are ones that you will need to know for this class. For each mineral, please include the following information: Chemical formula, class they belong to, physical description, Mohs hardness (can be rough estimation), cleavage/..
Relevant example for people today : Choose a saint and write a one page reflection on how this saint is a relevant example for people today. You may use the following link with lives of saints according to liturgical calendar or any other resource.
Draw a plate tectonics diagram : 1. Be able to draw a plate tectonics diagram. For each item you should be able to give a short description of what it is, and/or what is happening.

Reviews

Write a Review

Mathematics Questions & Answers

  Description of volume of solid of revolution

Let R be the region bounded by the curves f(x) = ln(x+3) +2 and g(x) = x^2 - 8x + 18. Using the washer method, find the volume of the shape which is formed if R is rotated around the x- axis.

  Use the arc length formula to find the length of the curve

Use the arc length formula to find the length of the curve

  Production planning department of graystar prefabricated

production planning department of graystar prefabricated homes company has to decide which types of homes to produce

  The amount of paper used by 30 so you change shape of

a typical sheet of newspaper is a rectangle that measures 22.75 inches tall by 15 inches wide. you want to maintain the

  Find the dimensions of the rectangle to the nearest thousand

The length of a rectangle is 2 cm more than 5 times its width.  If the area of the rectangle is 65 cm2, find the dimensions of the rectangle to the nearest thousandth.

  How much will be deducted biweekly paycheck for fica

Suppose that Lesley earns a gross salary of $43,500 per year and is paid biweekly. She pays $150 with each paycheck for deductions for health insurance and other benefits. How much will be deducted from her biweekly paycheck for FICA?

  What happens to demand

What happens to the graph if T = 50? When tastes and preferences change ceteris paribus, what happens to demand?

  Find the value of x that maximizes profit

suppose that the cost function in exercise 45 is C(x) = -2.5x+1, where z is the index-fund fee. (the company has a fixed cost of $1 billion dollars, and the cost decreases as a function of the index-fund fee.) find the value of x that maximizes pr..

  How long is the short rider

an artist's canvas forms a golden rectangle. The longer side of the canvas is 33 inches. How long is the short rider? round to the nearest tenth of an inch.

  Use the normal approximation to the binomial

A certain flight arrives on time 66 percent of the time. Suppose 106 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that exactly 75 flights are on time.

  Find the interest rate to the nearest tenth of a percent

after 3 months the simple interest earned annually on an investment of $7000 was $222. find the interest rate to the nearest tenth of a percent.

  Why is it important to be able to remove parentheses

Why is it important to be able to remove parentheses? Why is it important to be able to combine like terms? Provide examples that illustrate both of these processes.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd