A pet food producer fills 25-pound bags of dog food on two different production lines located in separate cities. In an effort to determine whether differences exist between the average fill rates for the two lines, a random sample of 20 bags from line 1 and a random sample of 24 bags from line 2 were recently selected. Each bag's weight was measured and the accompanying table reports the summary measures from the samples. Assume the two lines are normally distributed with equal variances. Complete parts a through c below. Click the icon to view the table of summary statistics from the samples. a. Calculate the point estimate for the difference between the population means of the two lines. Point estimate = - 0.15 b. Develop a 99% confidence interval estimate of the true mean difference between the two lines. The 99% confidence interval iss (µ1 – H2) < (Round to two decimal places as needed.)

A pet food producer fills 25-pound bags of dog food on two different production lines located in separate cities. In an effort to determine whether differences exist between the average fill rates for the two lines, a random sample of 20 bags from line 1 and a random sample of 24 bags from line 2 were recently selected. Each bag's weight was measured and the accompanying table reports the summary measures from the samples. Assume the two lines are normally distributed with equal variances. Complete parts a through c below. Click the icon to view the table of summary statistics from the samples. a. Calculate the point estimate for the difference between the population means of the two lines. Point estimate = - 0.15 b. Develop a 99% confidence interval estimate of the true mean difference between the two lines. The 99% confidence interval iss (µ1 – H2) < (Round to two decimal places as needed.)

Name: If using Excel, please show work.Help me fast.....I will give Upvote..
Uploaded: 2024-03-20T06:46:14.000Z
Channel: Bartleby
Description: If using Excel, please show work.Help me fast.....I will give Upvote.... Production ProductionLine 1Line 2Sample Size, nSample Mean, xSample Standard Deviation, s202425.1225.270.060.08 A pet food producer fills 25-pound bags of dog food on two differ

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

a sample of 9 days over the past six months showed that a dentist treated the following numbers of patients: 22, 25, 20, 18, 15, 22, 24, 19, and 26. if the number of patientsseen per day is normally distributed, would an analysis of these sample data reject thehypothesis that the variance in the number of patients seen per day is equal to 10? use a.10 level of significance. what is your conclusion?
Two new drugs are being compared for effectiveness in lowering total cholesterol levels. On the sample of 15 subjects, drug A is found to lower total cholesterol by an average of 75 mg/dl with SS = 2025. On the sample of 10 subjects, drug B lowered the mean cholesterol level by 78 mg/dl with SS = 2005. Use a 0.01 level of significance to test the claim that the two drugs are equally effective assuming populations are normally distributed. ( Use equal variance t procedure called pooled variance t procedure )
In a study comparing the systolic blood pressure of individuals sitting and standing, 14 subjects had their blood pressure measured standing, while 8 individuals has their blood pressure measured sitting. The investigator planned to test the hypothesis that the mean blood pressure readings are the same sitting and standing (the subjects remained in each position for 5 minutes). If the investigator tests at the 7% level of significance, assuming equal variances, the rejection region would be:
The manufacturer of a certain brand of lightbulbs claims that the variance of the lives of these bulbs is 4200 square hours. A consumer agency took a random sample of 25 such bulbs and tested them. The variance of the lives of these bulbs was found to be 5200 square hours. Assume that the lives of all such bulbs are (approximately) normally distributed.Test at a 5% significance level whether the variance of such bulbs is different from 4200 square hours.
A company that manufactures cars wants to estimate the variance of kilometers per liter for its newest car model. A random sample of 24 cars of this model showed that the variance of kilometers per liter for these cars is 0.58. Test at 1% significance level if the sample result indicates that the population variance is different from 0.30.
A professor in the ISE department claims that there is much more variability in the final exam scores of students taking the introductory statistic course as a requirement than for students taking the course as part of a major in Industrial Engineering (IE).Random samples of 13 non-IE majors (Group 1) and 10 IE majors (Group 2) are taken from the professor's class roster in his large lecture, and the results of the final exam scores show that the variances are 210.2 and 36.5, respectively. Do these data provide sufficient evidence to infer that there are differences in final exam scores between the two groups of students? Carry out an appropriate test of hypotheses at significance level 0.05Answer in 4 decimalsPlease include your calculations- H0- H1- Test Statistic- Value of Test Statistic- What is the numerical value of the critical region? Upper:________, Lower:_________- What is the p-value?- Decision (Reject or Failed to reject)- Conclusion
A soft-drink dispensing machine is said to beout of control if the variance of the contents exceeds1.15 deciliters. If a random sample of 25 drinks fromthis machine has a variance of 2.03 deciliters, does thisindicate at the 0.05 level of significance that the machine is out of control? Assume that the contents areapproximately normally distributed.
A research conducted by SSTA022 Class representative at the University of Limpopo indicates that running increases the lifespan among African men. The mean lifespan of 31 African men runners was 34.0% more than the mean lifespan of 31 inactive African men, with variances reported to be 110.25% and 104.04%, respectively. Assuming the populations to be approximately normally distributed with equal variances.i) Can you conclude that there is a significant increase in the lifespan of the men runners over the inactive men at ? = 0.05? ii) Construct a 95% confidence interval for ?1 − ?2.
The manufacturer of a specific pesticide claims that the variance of drop-in-potency within 6 monthsof manufacture is less than 4%. A random sample of 10 containers of pesticides from the manufacturergive following percentage measurement of drop-in-potency:0.5 3.5 4.4 6.0 6.6 5.4 7.9 4.6 5.4 5.7 Test the claim of the manufacturer at 5% level of significance (i.e., test whether the variance of drop-in-potency is less than 4%.
The 2 – inch - long bolts manufactured by a company must have a variance of 0.003 square inches before a buyer makes a purchase. A random sample of 29 such bolts gave a variance of 0.0058 square inches. Test at 1% level of significance if the variance of all such bolts is greater than 0.003 square inches.