Find how many expected to weigh between range

Assignment Help Basic Statistics
Reference no: EM13116877

The weights of men aged 18 to 74 are normally distributed with a mean of 173 lb and a standard deviation of 30 lb. find the percentage of such weights between 190 lbs and 225 lbs. among 400 men aged 18 to 74, how many are expected to weigh between 190 lbs and 225 lb.

Reference no: EM13116877

Questions Cloud

Blest be the day, and blest the month and year : Find and study carefully the following poems: "Blest be the day, and blest the month and year"; "Whoso list to hunt"; "Like as a ship that through the Ocean wide"; "Like as a huntsman after weary chase"; "Holy Sonnet 14."
What is the length of the box : An electron is con?ned to a one-dimensional box of length L. It falls from the second energy level to the ground state, and releases a photon with a wavelength of 322 nm.
What is the total magnification of an object : what is the diameter field of view for a 100x objective if the dfv for the 10x objective is 2.5 mm express in microns.
Calculate the volume and density of a rock : calculate the volume and density of a rock that has mass 110g and will cause the water to rise in graduated flask from 450 ml-715 mil, express in cm^3. calculate density of mass 36g and vol 72 ml, will it sink?
Find how many expected to weigh between range : Standard deviation of 30 lb. Find the percentage of such weights between 190 lbs and 225 lbs. among 400 men aged 18 to 74, how many are expected to weigh between 190 lbs and 225 lb.
Explain issues that organizations face when trying to expand : Identify issues that organizations face when trying to expand globally as a result of opportunities afforded by new technology.
Spot-money and bond markets : Explain how the Wal-Mart outlets in China would use the spot market in foreign exchange. Explain how Wal-Mart might utilize the international money markets when it is establishing other Wal-Mart stores in Asia.
Would an increase in an economy''s gdp affect trade patterns : If world prices increase, the current account balance of the importing country will improve.True / False? Explain and should high-income countries erect or maintain trade barriers against imports from low-wage countries?
Why is the sampling not simple random sampling : stratum 3 contains 1,000 invoices, and stratum 4 contains 3,450 invoices. A sample of 500 sales invoices is needed. What type of sampling should you do? Why?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Information about sample data

You are concerned about wait times at the cash registers in the supermarket. You collect data and have a sample size of 10, which test would you use a Z or a T test and why?

  What is roberta associated z score

Roberta scored in the 85th percentile on a standardized test of reading ability. What is Roberta's associated z score?

  Time series analysis of historical population

Estimate the population in 1600 and graph the population trend from 1600 through to 2000

  Post hoc fallacy

Post-hoc fallacy is that condition where regression shows a high degree of correlation (R square is high), but there is no real cause-effect relationship between the independent and dependent variables.

  Reasonable conclusion of the population mean

Would it be reasonable to conclude that the population mean is 63 pounds?

  Finding decision strategy and expected value of strategy

Find out the decision strategy company must follow, expected value of strategy, and maximum amount the company must pay market research firm for survey results.

  Chi-square test for binomial distribution

In a study designed to determine patientâ??s acceptance of a new pain reliever, 100 physicians each selected a sample of 25 patients to participate in the study.

  Steps of hypothesis testing-effects on mental health

Do these results suggest that the different therapies have different effects on mental health? (Use the .05 level.) a. Use the five steps of hypothesis testing.

  Importance and meaning for statistical significance

Discuss the concept of statistical significance, including your understanding of what it means, why it is important, and how it can be used.

  Frequency distribution to create a probability distribution

Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance.

  What is the smallest sample size

What is the smallest sample size needed to estimate the mean amount reimbursed to within 50 cents with 90% confidence, if a preliminary study indicates that the sample standard deviation of all amounts reimbursed is $3.00

  Null hypothesis-business executives owning blackberries

Suppose you have drawn a simple random sample of 400 business executives. In this sample, 150 executives owned Blackberries.

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