ou are employed to check quality control at a company that bottles drinks.  Cans of drink should contain 8.0 oz of drink.  You remove a small random sample of cans and measure the actual amount of drink in them and find there is an average of 7.91 oz with a standard deviation of 0.17 oz.  Which statistical test would be best to determine if the amount of drink in cans are signficantly less than the target 8.0 oz?

Q: Companies who design furniture for elementary school classrooms produce a variety of sizes for kids…

A: Given that, Mean = 39.2 Standard deviation = 1.9 Let X follows Normal distribution with mean 39.2…

Q: The average weight of adult females is 166.3 pounds, with a standard deviation of 14 pounds and a…

A: According to the given information in this question We need to find the standardized score for…

Q: The histogram below shows the distribution of gas mileage in miles per gallon (MPG) from 14 users…

A: The sample size is 14, sample mean is 53.3 MPG, and sample standard deviation is 5.2 MPG.

Q: Choose a quantitative variable.  Measure it on two different samples of 10, drawn from two different…

A:

Q: The masses of packets of tea can be used to follow a normal distribution with mean 250 grams and…

A: The provided information is  µ=250 σ=5 P(X>y)=0.788…

Q: Abbot Milk Company conduct a study about child growth and the relationship with milk consumption…

A: The claim is μ≠91.4 So, the null and alternative hypotheses are H0:μ=91.4H1:μ≠91.4 Given that…

Q: The effect size is a measure of the magnitude of a treatment effect in standard deviation units.…

A: Given that, The effect size is a measure of the magnitude of a treatment effect in standard…

Q: ctrical customers are often told what the average amount of electricity is used for similar homes in…

A: The mean is μ=1650Standard deviation is σ=320z-value at 86% confidence is Zc=1.18x=?

Q: a. Find the mean and standard deviation. b. What percentage of the data is within 1 standard…

A: Here , A medical laboratory tested 8 samples of human blood for acidity on the pH​ scale(xi)

Q: samples of n = 100 from

A:

Q: The weights of tablets are normally distributed with mean 254 mg and standard deviation 4 mg.  What…

A: We have given , Mean(u) = 254 mg. Standard deviation (sigma) = 4 mg. We have to find  What…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

A: It is given that the mean is 16.5 lbs and standard deviation is 2.5 lbs.

Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…

A: Given: n=25x¯=22.5σ=4.1α=0.01μ=24 The test hypothesis are, H0: μ = 24 H1: μ < 24. The hypothesis…

Q: TOTAL PLASMA VOLUME IS IMPORTANT IN DETERMINING THE REQUIRED PLASMA COMPONENT IN BLOOD REPLACEMENT…

A: Consider Y as the blood plasma volume in male firefighters. The provided information is as follows:…

Q: The population average GPA for fall students is 3.00. You think the average GPA for Psychology…

A: The test statistic for single mean is, t=x¯-μ0snwherex¯=sample means=sample standard…

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).  To…

A: It is given that the mean is 25 and the standard deviation is 6.5.

Q: A study has been conducted of the airspeed of various bird species. You would like to specify the…

A:

Q: Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All…

A: given, Group1: The ships carry 500 passengers Sample size n1=37 Sample average rating x¯1=85.39…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 65…

A: Given that  X~N( μ = 65 , ? = 5 ) μ = 55 , ? = 5

Q: compare the breathing rate before and after breath holding. chose the correct statistical test what…

A: For comparing the breathing rate before and after breath holding , we will be measuring the…

Q: What level of measurement do the variance and standard deviation assume?

A: Variance and standard Deviation tells about the spread or variation in the dataWe calculate the…

Q: lab supply company sells pieces of Douglas fir 6 inches long and 2.5 inches square for force…

A: From the given information, Population standard deviation=3500 Margin of Error=700 Confidence level…

Q: 6. Data from the Nati indicates that the mean price of a home in Denver, from April through June of…

A: Ti 83/ 84  command  STAT > TESTS > Z-TEST >Stats > enter the data  (I have provided you…

Q: The Smallville Police has released that they issue an average of forty speeding tickets per day. An…

A: The hypotheses for the test are given below.

Q: A test has a mean score of 55 with a standard deviation of 12. Using the Empirical Rule determine…

A:

Q: Use the empirical rule to estimate the number of farms whose land and building values per acre are…

A: here given , The mean value of land and buildings per acre from a sample of farms is ​$1600​,with a…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.5 and…

Q: The annual per capita consumption of ice cream (in pounds) in the United States can be approximated…

A: We have given that  Mean(µ) = 20.7Standard deviations (σ) = 4.2

Q: You are performing a study about weekly per capita milk consumption. A previous study found weekly…

A: Given :  A previous study found weekly per capita milk consumption to be normally​ distributed, with…

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).  To…

A: It is given that the mean is 25 and the standard deviation is 6.5.

Q: Ms. Wall administered a push-up test to her adapted PE class.  There were 6 students in the class.…

A:

Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…

A: We have to identify null and alternate hypothesis.

Q: n automobile manufacturer claims that their van has a 51.4 miles/gallon (MPG) rating. An independent…

A:

Q: A study reported on essential organic molecules and a Normal model can be used to describe these…

A: As per our guidelines we are suppose to answer three sub parts. Given,mean(μ)=194standard…

Q: The mean temperature in Amman for the month of October is 23 degrees with a standard deviation of…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.