For a sample of employees at a manufacturing company, their age of retirement was recorded and is presented in the table below. Find the standard deviation for the data and show your work for each step. Age Frequency 37 - 46 19 47 - 56 23 57 - 66 27 67 - 76 28

Q: Public health statistics indicate that 26% of  American adults smoke cigarettes. A random sample of…

A:

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A: Given,sample size(n)=64sample mean(x¯)=350Population standard deviation(σ)=100

Q: in the nfl the mean weight of linemen is 290lb. the standard deviation is 24lb. you may presume that…

A: Given data,μ = 290σ = 24a) P(X>291) = ?                         = Px-μσ> 291-29024…

Q: Private colleges and universities rely on money contributed by individual and corporations for their…

A: The given data is, 60.2 51.2 235.1 343 122.6 177.5 95.4

Q: The data describing the hourly output of a production line are normally distributed, with a mean of…

A:

Q: Executives of a supermarket chain are interested in the amount of time that customers spend in the…

A: We are given that the mean shopping time spent by customers at the supermarkets is The sample mean…

Q: A local amusement park has 30 rides that park visitors can go on. The following table shows the…

A: The data are given,

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a…

A: Obtain the 90% confidence interval for the true difference between the mean birth weights for "zinc"…

Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A:

Q: Students in a biology class planted eight mongo seeds in separate plastic cups and placed them under…

A: The range of data is given by: R=H-L By observation the highest value is 10.3 and the lowest is 5.7…

Q: The average age of vehicles registered in the United States is 96 months. Assume the population is…

A: Given that: X is normally Distributed with mean µ = 96.0 and standard deviation σ = 15.0 By using…

Q: The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard…

A: Z=x-μσ~N(0,1) μ=268, σ=15

Q: The average expenditure on Valentine's Day was expected to be $100.89  (USA Today, February 13,…

A: Given that ,The Average expenditure of 54 male consumers =$133.56The Average expenditure of 34…

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a…

A:

Q: The average annual income of 10 million people working in Manila is P100,000. The standard deviation…

A: It is given that, Population mean (μ) = 100,000 Population standard deviation (σ) = 2500 Sample size…

Q: in hours) that teenagers spend playing video games per week. The distribution is approximately…

A: Let X be the  teenagers spend playing video games per week  X~N(mean=14, standard deviation=4)

Q: he average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006).…

A: Given that  he average expenditure on Valentine's Day was expected to be $100.89  Male   Female…

Q: Lions gate produces and distributes about 30 movies per year. On average ,these movies rake in about…

A:

Q: The lifespan of a certain brand of car tires is approximately normally distributed. The car tires…

A: Given that the lifespan of a certain brand of car tires is approximately normally distributed. The…

Q: In physics examination, the mean grade is 80 and the standard deviation is 5. a. Find the…

A: Solution-: Given:  Let, X- Score (grades) of examination (a) Find the corresponding z-scores of two…

Q: aking the Graduate Management Aptitude Test averaged 812 with a standard deviation of 145. Only…

A: Given: Meanμ=812Standard deviationσ=145 Consider, X be the random variable that shows the average…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample of…

A: Given, A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A…

Q: A survey research company asks 100 people how many times they have been to the dentist in the last…

A: The given table can be filled by using EXCEL software as given below. Where “xbar” is the mean…

Q: The heights of adult men on an island in the Pacific are approximately normal with an average height…

A: Let x be the heights of adult men on an island in the Pacific which is approximately normal with…

Q: Executives of a supermarket chain are interested in the amount of time that customers spend in the…

A: The provided information is:

Q: Six different​ second-year medical students at Bellevue Hospital measured the blood pressure of the…

A: Given 126,138,132,138,124,122

Q: Private colleges and universities rely on money contributed by individual and corporations for their…

A: The point estimate for the standard deviation of endowments of all private colleges in the US is…

Q: A popular restaurant chain advertises that it delivers orders within 30 minutes. Suppose the average…

A:

Q: Eureka is a weather station in the state of California and Seabrook is a weather station in the…

A: Given information: Temperature recorded at Eureka was 240 Celsius. Temperature recorded at Seabrook…

Q: A student studying statistics wants to look at data for his favorite sport, American football. He…

A: It is given that that a student collect data on the lengths of 100 field goals from various games…

Q: A nutritionist claims that the mean tuna consumption by a person is 6 pounds per year. A sample of…

A:

Q: burban Families Watched An Average Of μ = 60 Minutes Of Television Each Day. Assuming That The…

A: Given dataMean µ = 60 minStandard deviation σ = 25 minutesa) proportion of 2-year-old children watch…

Q: Assume that​ women's heights have a distribution that is symmetric and​ unimodal, with a mean of 64…

A: As per the multiple questions rule, answering first question. Please repost the second question…

Q: Six different second-year medical students at Bellevue Hospital measured the blood pressure of the…

A:

Q: The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13,…

A:

Q: What are the null hypothesis (H,) and the alternative hypothesis (H,) that should be used for the…

A: The type I error is defined is as rejecting the null hypothesis when actually it is true.  The type…

Q: Using technology, find the range and standard deviation, round to one decimals place: The table…

A: Given data, 20 39 34 29 48 84 64 25 75 89 40 57 82 43 62 52 49 59 38 87 49 66 95 17

Q: The following table shows the number of people that are either 18, 19, 20 or 21 years old, from a…

A: (a) From the information,  n = 258 The frequency value at age 21 is, The complete frequency table…

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a…

A: Solution: Let X be the birth weights for “Zinc” babies and Y be the birth weights for “placebo”…

Q: A highschool teacher is interested in examining the math performance of one particular child, Mike,…

A: Given :   To find : 1 ) Which quantity need to decide in which year Mike's did his best in test 2 )…

Q: The number of hours spent per week on household chores by all adults has a mean of 28 hours and a…

A:

Q: A researcher believes the mean weight of males sulcata tortoises is more than 205 pounds.  She…

A: Given Data: x¯=216.2s=13.5n=18   Null and Alternate Hypothesis: H0: μ=205 H1: μ>205

Q: A highschool teacher is interested in examining the math performance of one particular child, Mike,…

A: Given information: Here, the table of mean, standard deviation, and score mikes math score is given…

Q: Possible answers for Q1: A) performance B) t-score C) raw score D) z-score Possible answers for Q2:…

A: Given: Year Mean SD Mike's score 2018 90.5 5.1 96 2019 88.7 8.8 95 2020 69.5 3.4 78

Q: Recently, a random sample of 13–18 year olds was​ asked, "How much do you currently have in​…

A: Introduction: Mean(Average): The Average(mean) of data set is found by adding all numbers in the…

Q: find the mean and standard deviation for A B C Sample a: 12. 21.30 Sample b: 70, 79,88 Sample…

A: Given information- We have given 3 samples. Sample a, sample b, sample c. We have to find the mean…

Q: The incomes of trainees at a local mill are normally distributed with a mean of $1,100 and a…

A: Standard Normalization is used to compute the probability.

Q: A dish contains 3 blue and 4 red M&Ms.  You grab 3 M&Ms from the dish.  X is the number of red M&Ms…

A: Given data:   The number of blue M&Ms is B=3. The number of red M&Ms is R=4. The number of…

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a…

A: we have given that  We need to construct the 98% confidence interval for the difference between the…

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.