A collar manufacturer is considering the production of new collars to attract young men. Thus following statistics of neck circumference are available based on measurements of a typical group of students of a particular university: Mid values (in inches): 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 Number of students: 2 16 36 60 76 37 18 Compute the standard deviation and use the criterion x +3o, where o is the standard deviation and x is the arithmatic mean to determine the largest and smallest size of the collar he should make in order to meet the needs of practically all the customers, bearing in mind that collars are worn average half an inch longer than the neck size.

Q: We wish to test Ho: u = 50 versus H: u # 50. A random sample of 38 observations yields a mean of 56…

A: Given,sample size(n)=38sample mean(x¯)=56sample standard deviation(s)=21H0:μ=50Ha:μ≠50

Q: In a university entrance exam, the results in a certain subject are scaled so that the marks will be…

A: a) The marks are normally distributed with mean 100 and standard deviation 25. Student in the top…

Q: (a) If the sample standard deviation is determined to be s=1.3, compute the test statistic. x=(Round…

A:

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: According our policy we can answer only first three subpart for remaining please repost the…

Q: A simple random sample of 101 course evaluations had a mean = 3.90 with a standard deviation s =…

A: Given: Sample Size n=101 Mean μ=3.90 standard deviation s=0.52 level of significance α=0.05

Q: The mean water temperature downstream from a discharge pipe at a power plant cooling tower should be…

A:

Q: A collar manufacturer is considering the production of a new collar to young men. The following are…

A: It is given that the neck circumference of a typical group of the college students are: Mid value…

Q: Find the standard​ deviation, s, of sample data summarized in the frequency distribution table given…

A: Frequency distribution: The number of values lying in the particular interval or the number of times…

Q: 1. A consumer group claimns that the mean annual consumption of banana by a person in the…

A: We have given that, population mean (µ) = 10.3, Sample mean (x̄) = 9.9, population standard…

Q: The marks obtained by the students in an examination are known to be normally distributed with a…

A: If the marks are denoted by X then it is asked to find the value of PX<45 which can be computed…

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: We have given that data  15 17 15 19 14 13 13 17 17 12 I want to find mean and standard…

Q: A local group claims that the police issue at least 60 speeding tickets a day in their area. To…

A:

Q: The following BMI scores measured in 12 patients who are free of diabetes and participated in a…

A:

Q: What is the standard deviation of the he final exam grade distribution for all students in the…

A: Given grade (x) probability (p)  x*p x2  x2 *p 0 0.03 0 0 0 1 0.08 0.08 1 0.08 2 0.17 0.34…

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: a.   Consider that the random variable has defines the hemoglobin count for healthy adult women.

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: We have given that  Population mean μ = 14 Sample size n = 10 I want to find mean  standard…

Q: In a population of Siberian flying squirrels in western Finland, assume that the the number of pups…

A: From the provided information, Mean (µ) = 3.66 Standard deviation (σ) = 2.9598 Sample size (n) = 50

Q: In a university entrance exam, the results in a certain subject are scaled so that the marks will be…

A: a) The marks are normally distributed with mean 100 and standard deviation 25. Student in the top…

Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

A: The summary of statistics is, The value of effect size Cohen’s d is, Interpretation: The value of…

Q: A radio station claims that the amount of advertising per hour of broadcast time has an average of…

A: The z-score formula is, z=x-μσ In the formula, x be the random variable, μ be the population mean,…

Q: A USA Today poll asked a random sample of 1012 U.S. adults what they do with the milk in the bowl…

A: Given Data: n=1012 p=0.7

Q: A collar manufacturer is considering the production of new collars to attract young men. Thus…

A: Formula to find arithmetic meanx¯ is, x¯=∑fixiN where, xi=mid values             fi=number of…

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: Given data is15,17,15,19,13,12,14,17,17,12

Q: Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of…

A: Given: Let X denote the ACT is reasonably normally distributed with a mean of 18 and standard…

Q: Compute the standard deviation

A: The file contains the amount that a sample of nine customers spent for lunch ($) at a fast-food…

Q: A collar manufacturer is considering the production of a new style of collar to attract young men.…

A:

Q: Use the values below to calculate the standard deviation of the sampling distribution of differences…

A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first…

Q: Is the difference between the mean annual salaries of registered nurses in State A and State B equal…

A: Given Information :  Provided claim is whether there is difference between the mean annual salaries…

Q: A radio station claims that the amount of advertising per hour af broadcast time has an average of…

A: Given: n= 1 hours ,x̄=7/60= 0.1167 hour ,σ=2.5/60=0.04167 hours µ=16/60=0.2667 hours

Q: A major cab company in Chicago has computed its mean fare from O'Hare Airport to the Drake Hotel to…

A:

Q: The weights of bunches of bananas in the grocery store are Normally distributed with a mean weight…

A: ANSWER: Using the given data,

Q: A collar manufacturer is considering the production of a new style of collar to attract young men.…

A:

Q: Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in…

A: Given, n=196p=0.12

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A:

Q: Consider the time it takes, in minutes, for police officers to respond to a 911 call, where a…

A: Identify the correct option for the % of the response times that falls between 19 to 31 minutes. The…

Q: A Neilson Company report states that the mean number of TV sets in the U.S. household is 2.24.…

A: Note:-According to Bartleby Expert guideline, we can answer only first three subparts of a question…

Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

A: Given that, μ=63.80,s=2.66, M = 62.60 and n=25 The  effect size Cohen’s d is, The  effect size…

Q: The following are the number of customers a restaurant served for lunch on 15 weekdays: 50 49 55 64…

A: The parametric and non parametric test are used to compare the significance between the sample and…

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: The given HC data set values are 14, 18, 15, 19, 13, 11, 15, 18, 15 and 12.

Q: On the package of a pain medication, it is stated that the average time to receive relief is 45…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: The following shows the number of shirts by sizes that are manufactured in a factory on a particular…

A: Given information: The number of shirts manufactured in a factory on a particular week is provided…

Q: In a simple random sample of 46 oral temperatures, the mean was 37.3 degrees Celsius with a standard…

A: Claim: The population mean of all oral temperatures is greater than 37 degrees Celsius The type of…

Q: A manufacturer of cellular phone batteries took a sample of 13 from a day's production and used them…

A: NOTE: As per the guidelines, we are supposed to solve the first three sub parts only. Given: Data:…

Q: Is the difference between the mean annual salaries of registered nurses in State A and State B equal…

A: Given; x¯1=75695                      x¯2=70695n1=30                             n2=25σ1=8337…

Q: The results of a certain medical test are normally distributed with a mean of 127 and a standard…

A:

Q: The manager at a clothing factory wants to test if a new machine is producing a particular type of…

A: Given that   Sample size n =49 Population mean μ =70 Population standard deviation =5

Q: It is desired to test, at a significance level of 5%, the hypothesis that the average height of men…

A: Note: If the post contains multiple questions only allow to do first question as per guidelines of…

Q: USA Today reported that approximately 25% of all state prison inmates released on parole become…

A: Solution: d. From the given information, Then, Thus, the expected number of repeat offenders out…

Q: Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of…

A: (i)   The mean value for the given sample observations is 15.4 and it is calculated by using Excel…

Q: Is the difference between the mean annual salaries of registered nurses in State A and State B equal…

A: Sample mean (x̅1) = 75,876 Sample mean (x̅2) = 70,876 Sample size (n1) = 30 Sample size (n2) = 25…