The monthly income of 5,000 workers at the URC plant are distributed normally. Suppose the mean monthly income is 10,250 pesos and the standard deviation is 250. a) 20% of workers earn more than how much per month? sketch the curve: solution: b) How many workers earn less than 8500 pesos per month? sketch the curve: solution: c) What percentage of the workers earn between 8500 pesos and 12,000 pesos per month? sketch the curve: solution: d) 95% of workers earn less than how much per month? sketch the curve: solution: e) The middle 50% of workers earn between how much? sketch the curve: solution:

The monthly income of 5,000 workers at the URC plant are distributed normally. Suppose the mean monthly income is 10,250 pesos and the standard deviation is 250. a) 20% of workers earn more than how much per month? sketch the curve: solution: b) How many workers earn less than 8500 pesos per month? sketch the curve: solution: c) What percentage of the workers earn between 8500 pesos and 12,000 pesos per month? sketch the curve: solution: d) 95% of workers earn less than how much per month? sketch the curve: solution: e) The middle 50% of workers earn between how much? sketch the curve: solution:

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

PAGASA provided the mean annual rainfall (in millimeters) in Cagayan Province from years 2000- 2015. Rainfall measurements are as follows: 499.2, 555.2, 398.8, 391.9, 453.4, 459.8, 483.7, 417.6, 469.2, 452.4, 499.3, 340.6, 522.8, 469.9, 527.2, 565.5, 584.1, 727.3, 558.6, 338.6 Construct a 95% confidence interval for the mean annual rainfall. Does the data appear normally distributed? Include your solution.
People with high blood pressure suffer from hypertension. Data on fasting blood sugar (milligrams/deciliter) and magnesium (milligrams/deciliter) in blood specimens collected from 60 patients diagnosed with hypertension were collected. The accompanying technology printout gives 90% confidence intervals for the mean fasting blood sugar (FBS) and mean magnesium level (MAG). Use this information to complete parts a through d below. Variable FBS MAG N 60 60 Mean 102.11 1.85238 StDev 38.91 0.05472 90% CI SE Mean 5.02 ( 93.72, 110.50 ) 0.00706 (1.84058, 1.86418) a. Locate and interpret the 90% confidence interval for mean fasting blood sugar on the printout. (Type integers or decimals. Do not round.) O A. The 90% confidence interval for mean fasting blood sugar indicates that 90% of all hypertensive patients will have a fasting blood sugar level between O B. The 90% confidence interval for mean fasting blood sugar indicates that 90% of hypertensive patients in the sample had a fasting blood…
The Consumer Price Index is reported monthly by the U.S. Bureau of Labor Statistics. It reports the charge in prices for a market basket of goods from one period to another. The index for 2010 was 213.967. BY 2017, it increased to 239.051 What was the geometric mean annual increase for the period? ( Round your answer to 1 decimal)
2. A certain chemical pollutant in the Pasig River has been constant for several years with mean 34ppm (parts per million). A group of industry representatives claim that their waste management programs have lowered this average significantly. Claim or Mathematical H. H. Н. апd H a Statement Symbol >, +, or <
What is the expected value of the following game? If a player rolls two dice and gets a sum of 2 or 12 he wins $20. If the person rolls a 7, he wins $5. The cost of a dice roll is $3.
The cumulative frequency below displays the amount of time (in minutes) taken to travel to work by employees at a shoe factory. 100 80 60- Cumulative frequency 40 20 10 30 40 Time (minutes) 20 50 60 70 80 90
1. Draw by hand or in Excel fully labelled curves on a common scale to represent two sets of scores where:a.Mean = 25, Standard Deviation = 4,Mean = 50, Standard Deviation = 4.b.Mean = 50, Standard Deviation = 2,Mean = 50, Standard Deviation = 5.
Construct simple average price relative index number using geometric mean for the year 2015 for the data showing the expenditure in education of the children taking different courses. Expenditure per year 2014 2015 B.Sc 24000 26000 B.Com 20000 22000 B.E 108000 12000 M.B.B.S 150000 168000
1. Find the percentage of N.d. observations with a zz-score between z1= -3.04 and z2 = 2.85. Give your answer to two decimal places. 2. Find the proportion of N.d. observations with a zz-score between z1= -2.95 and z2 = 0.70. Give your answer to four decimal places.
11. If the temperatures of various cities are recorded for a year, what would the measures of spread tell you about the weather?
Is body temperature a nominal, ordinal, interval, or ratio?
6. data are those that can be counted and assume only a countable number of values. A. Continuous C. Qualitative B. Variable D. Discrete