A large milling machine produces steel rods to certain specifications. The machine is considered to be running normally if the standard deviation of the diameter of the rods is at most 0.42 millimeters. The line supervisor needs to test the machine is for normal functionality. The quality inspector takes a sample of 45 rods and finds that the sample standard deviation is 0.49. What is the test statistic? Select one: a. 59.89 b. 48.63 c. 50.50 d. 52.45

A large milling machine produces steel rods to certain specifications. The machine is considered to be running normally if the standard deviation of the diameter of the rods is at most 0.42 millimeters. The line supervisor needs to test the machine is for normal functionality. The quality inspector takes a sample of 45 rods and finds that the sample standard deviation is 0.49. What is the test statistic? Select one: a. 59.89 b. 48.63 c. 50.50 d. 52.45

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

See similar textbooks

Similar questions

DO NOT USE LAGRANGIAN
make sure the answer is corrrect 100%
0 2 A courier company guarantees its customers that the average time to pick up their packages is 20 minutes with a tolerance of ± 4 minutes. The company collected data on 30 actual arrival times and determined that the average is 20 minutes and standard deviation of this sample was 1 minutes. What is the Cpk of this package service process? 01 Less than 1 O Great than 2 1.33
A courier company guarantees its customers that the average time to pick up their packages is 20 minutes with a tolerance of 4 minutes. The company collected data on 30 actual arrival times and determined that the average is 20 minutes and standard deviation of this sample was 1 minutes. What is the Cpk of this package service process? O Less than 1 1.33 O Great than 2 01
If you purchase a gift card electronicallt through a site such as Plastic Jungle, you can use the money instantaneously with any online retailer that accepts gift cards. T/F
Hitrola used the nurmat detribution to determine the probability of afects and the number of defects expected in a production process. Assime a production process produces items with a mean weight of 12 ounces a. The process standard deviation is 0.10, and the process contradis set at phu or minus 1 standant deviation, units with weights less than 11.9 or greater than 12.1 muncra will be dassified as defects What is the probability of a defect (to a decimals 0198 In a production run of 1,000 parts, how many defects would be found its the nearest whole number? Thigh proces design intervents, the proces standard deviation can be reluced to 0.05, Assume the process contre remains the same, with weights less than 11.preater than 121 cmces being seeded as defects. What a production run of 1,000 parts how many defects would be found to the warget whole number) What is the advantage of reducing process variation, thereby causing a problem Emits to be at a greater number of standard deviations…
asnwer for 2.
Calculate standard deviation Marks: 0-10,10-20,20-30,30-40,40-50 Frequency :10,15,10,10,5
Economics MY NOTES ASK YOUR TEACHER DETAILS ASWESBE9 8.TB.1.021. 0/1 Submissions Used In order to estimate the average electric usage per manth, a sample of 121 houses was selected and the electric usage was determined. Assume a population standard deviation of 330 Vilnwatt-hours. Find the standard error of the mean. O30 O 121 O 30
A sports shop selects a random sample and records the sales of items made in China and thosemade in America. Country of origin n mean St.Deviation China 50 22.5 9.75 America 33 33.15 11.6 What is the SE Mean for the sales from China?
The data from 200 machined parts are summarizedas follows:y yesdepth of boreE, noabovebelowedge conditioncoarsetarget15target10moderatesmooth25205080(a) What is the probability that a part selected has a moderateedge condition and a below-target bore depth?(b) What is the probability that a part selected has a moderateedge condition or a below-target bore depth?(c) What is the probability that a part selected does not have amoderate edge condition or does not have a below-targetbore depth?(d) Construct a Venn diagram representation of the events inthis sample space.
#14 Control Charts: Yellowstone National Park Yellowstone Park Medical Services provides emergency health care for park visitors. The average number of visitors treated is 21.7 per day during the summer period. The estimated standard deviation is 4.2 visitors. a. For a 10-day summer period, the following data show the number of visitors treated each day. Day 1 2 3 4 5 6 7 8 9 10 # 25 19 17 15 20 24 30 19 16 23 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"? b. For another 10-day summer period, the following data saw obtained. Day 1 2 3 4 5 6 7 8 # 20 15 12 21 24 28 32 36 96 35 10 37 17 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"?