A chemical company alleged that the average weight of its bag of chemical is 50 kilograms with a standard deviation of 0.9 kilograms. A sample of 29 bags was taken and revealed a mean weight of 48.1 kilograms. Shall we accept the allegation of the chemical company? Use 0.01 as level of significance.

Q: The mean yield of wheat from a district A was 210 tbs. with S.D.= 10 lbs. per acre from sample of…

A: Any assumption about the parameter or probability function is known as Hypothesis testing. For the…

Q: The heights of women aged 20- 29 in the United States are approximately Normal with mean 64.2 inches…

A: The heights of women are approximately normal with a mean of 64.2 inches and a standard deviation of…

Q: Medical research suggests that systolic blood pressure in adults is approximately normally…

A: Denote X as the blood pressure in adults. It is given that X is approximately normally distributed,…

Q: Men's heights are normally distributed with mean 69.3 inand standard deviation 2.94 in. Women's…

A: Let X denote the Women's heights and it follows normal distribution with mean μ=63.8 in and standard…

Q: For what lengths will a bolt be​ destroyed?

A: here given, mean = 7cm standard deviation = 0.10 cm

Q: The amount of coffee dispensed by a vending machine is assumed to be normally distributed. A vendor…

A: Solution-: Given: μ0=6,σ=0.8,x¯=5.8,n=36,α=0.05

Q: according to the US census bureau,the mean of the commute time to work for a resdient of…

A: It is an important part of statistics. It is widely used.

Q: The mean BMI score for dieters on the Jenny Craig weight loss program is 38.5, and the standard…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A: Let "X" be the lengths of pregnancies in a small rural village in days.

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Solution-: Let, X= The distance traveled per truck per year Given: We find, P[ either less than…

Q: (b) What is the probability that the sample mean is within 1 inch of the population mean for…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are…

A: Given :Population mean length (  ) = 10 cm.Population standard deviation of length (  ) = 0.05 cm.

Q: In 2019, College Board reported that the mean score for the math section of the SAT was 528 with a…

A: given datanormal distributionμ = 528n = 110top 2.5% of student get scholarship

Q: The use of chemicals is considered to increase the resistance to scratches during a painting…

A:

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.4 and…

Q: The shelf life of a battery produced by one major company is known to be Normally distributed, with…

A:

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: Let µ be the mean amount of summer rainfall for the northeastern US.Claim is that the mean amount of…

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: A certain car model has a mean gas mileage of 34 miles per gallon (mpg) with a standard deviation 5…

A:

Q: Almost all medical schools in the United States require applicants to take the Medical College…

A: Given data,Mean μ=10.6sd    σ=1.7