1. ERP Company is a company that produces Brand A toothpaste and uses a machine to package 250grams per tube. Assume that the net weight is normally distributed with a population standard deviation of 10 grams. A randomly selected 45 tubes of Brand A toothpaste have a mean weight of 225 grams. Is the packaging machine functioning properly? Test the claim at 0.05 level of significance

Q: 1. A quality assurance test was conducted on a randomly selected sample of 500 newly developed…

A: Sample Size,n = 500 Sample mean number of defective pieces = 49 We know that sample mean is an…

Q: 3. The weight of a regular bag of new powdered milk are normally distributed with mean 500 grams and…

A: We have given that.   X~N( μ , ?^2 )   μ =500, ? =?   Z-score =( x - μ )/?

Q: .The sports equipment company developed a synthetic type of fishing line which is claimed to have an…

A: Given :  n = 50 x¯ = 7 σ = 0.5 α = 0.01

Q: Refer to the Baseball data: 1) At the 0.05 significance level, can we conclude that there is a…

A: To test the hypothesis for the difference in the mean salary of teams in the American League versus…

Q: c) A factory produces nails, for which the length is normally distributed with the mean o 4mm and…

A:

Q: 1. The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A…

A:

Q: 1. Weekly demand for smartphones at an Apple store is nor- mally distributed, with a mean of 500 and…

A: Given ROP=350 Formula for the ROP is given by ROP=Demand during lead time+safety stock Hence, Safety…

Q: An engineer has designed a valve that will regulate water pressure on an automobile engine. The…

A: From the given information, it can be observed that the claim is that the valve performs more than…

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A:

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A: Use excel formula "=NORM.S.DIST(1.976, TRUE)" to find the probability.

Q: A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive…

A:

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A: Introduction:The sampling distribution of the sample mean, X̅ for a large sample (n ≥ 30) is…

Q: Subjects in a study by Dabonneville et al. (A-9) included a sample of 40 men who claimed to engage…

A: From the provided information, The hypotheses can be constructed as: H0: µ1 = µ2 H1: µ1 < µ2…

Q: a)It is claimed thata a vacuum cleaner uses an average of 46kwh per year. If a random sample of 34…

A: a)   Denote μ as the population mean power in kwh. It is needed to check, whether the vacuum cleaner…

Q: A metropolitan transportation authority has set a bus mechanical reliability goal of 3,700 bus…

A: Given information: A metropolitan transportation authority has set a bus mechanical reliability goal…

Q: A particular manufacturing design requires a shaft with a diameter of 24.000 mm, but shafts with…

A:

Q: 1. The local chapter of the National Organization of Women (NOW) Claims that female College…

A: Given: n1 = 35 n2 =30 x1 bar = 35000 x2 bar = 34000  s1 = 800 s2= 1000 Level of significance =0.01

Q: 2) Suppose that a manufacturer of laptop batternes claims that his product last more than 950 hours.…

A: Given : sample size, n = 45 sample mean, x̄ = 925 population standard deviation,σ=…

Q: A researcher wishes to determine whether the salaries of professional nurses’ employees by private…

A: Let 1 represents Private and 2 represents the Government. State the Given values, State the Null…

Q: An ice cream company owns two plants, namely A and B, and wants to test using a 5% significance…

A: Given: The two plants of ice cream company are A and B. The level of significance is α=0.05. The…

Q: A report states that the mean yearly salary offer for students graduating with a degree in account…

A: Provided information is: It is claimed that the mean salary offer for accounting graduates of…

Q: A.  A beverage bottling company labels a product as having a mean volume of 16 oz.  It is important…

A: A. The beverage bottling company labels a product as having a mean volume of 16 oz.

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A:

Q: report states that the mean yearly salary offer for students graduating with mathematics and…

A: Given data : sample size, n =50 sample mean, x̄ = 63400 sample standard…

Q: 3) A job placement director claims that the average starting salary for nurse is $25000. A sample of…

A:

Q: Question #3 i started problem little P#1 mean =9 SD= 3.5 n=  28 P#2 mean 13 SD= 4.5 n=23  Chpt  10

A: The aim is to check whether there is a difference between the average manufacturing times in the two…

Q: 1.     A tire company claims that its top selling brand averages at least 50,000 miles before it…

A: Given : x¯ = 46500 σ = 8000 n = 28 level of significance = 0.05 a. Here we have known population…

Q: 1. In a research report, Richard H. Weindruch of the UCLA Medical School claims that mice with an…

A:

Q: 1. Assume that the average yearly pay of all teachers in the Philippines follows a normal…

A: Here all are normally distributed

Q: 2. A company which produces batteries claims that the life expectancy of their batteries is 90…

A:

Q: the relevant hypotheses using  ? = 0.05.   a.   Find the test statistic and P-value. (Use technology…

A:

Q: 1. A random sample of 49 business establishments shows that the average monthly water consumption is…

A: Note: Hey there! Thank you for the question. As you have posted multiple questions, we have helped…

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A: Hypothesis Testing (Z-TEST)           In statistics, we have to determine the variation…

Q: report states that the mean yearly salary offer for students graduating with mathematics and…

A: Given that  Sample size n =50 Sample mean =63200 Sample standard deviation =3900

Q: 1. The average height of all previous contestants in a beauty pageant has been 180 cm with a…

A: The given mean for all previous contestants is 180 cm and standard deviation is 5 cm. That is,…

Q: A fast-food franchiser is considering building a restaurant at a certain location. According to a…

A: Denote μ as the population mean number of pedestrians passing the location per hour.   It is needed…

Q: The 2015 general Social Survey asked a large number of people how much time they spent watching TV…

A: Solution: Given information: n= 39 Sample size s = 2.8 Sample standard deviationμ= 4.2 Population…

Q: A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive…

A: a) Given claim is the mean tenure for a chief executive office was at at least nine years. Null…

Q: A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus…

A: Answer - A  metropolitan transportation authority has set a bus mechanical reliability goal of  3900…

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A: Solution: We are given:

Q: Suppose that the average distance PGA tour players can drive a golf ball off the tee is 295.3 yards…

A: From the provided information, Sample size (n) = 10 Sample mean (x̅) = 295.44 Population standard…

Q: 3- At a computer manufacturing company, the actual size of a particular type of computer chips is…

A: We have to find required sample mean.

Q: 1. The quality control manager at a light bulb factory needs to estimate the mean life of a new type…

A: As per our guidelines we are suppose to do only one questionGivensample size(n)=32sample…

Q: A schoolteacher is worried that the concentration of dangerous, cancer-causing radon gas in her…

A:

Q: A consultant is tasked with studying the purchasing habits of customers in an Indonesian coffee shop…

A: Given : n(sample size)=68 =299000 rupiah s(sample standard deviation)=69000 rupiah   =274000…

Q: 1. It is claimed that the average weight of a bag of biscuits is 250 grams with a standard deviation…

A: Given  μ=250, σ=20.5, n=50, x̄=240, ɑ=0.05 We want to test the hypothesis.

Q: Subjects in a study by Dabonneville et al. (A-9) included a sample of 40 men who claimed to engage…

A:

Q: A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus…

A:

Q: A marine biologist claims that a harbor seal's average dive time is at least 5.8 minutes. A random…

A:

Q: Suppose the weights of seventh-graders at a certain school vary according to a Normal distribution,…

A: From the given information,   Suppose the weights of seventh-graders at a certain school vary…