You want to estimate the sample standard deviation so you can get an idea of how large of a sample you need. The topic of your research is "number of hours of exercise per week for adults". You estimate a reasonably high number of 14 and a low number of 4. What is the estimate for the standard deviation? Give your answer to two decimal places. S =

Q: A group of students take a Statistics Exam where the average was M = 85 and the standard deviation…

A: We have given that  X~N( mu,  sigma^2) mu=85 , sigma =6.8   ,X=85 Z-score =(x- mu)/sigma

Q: er has a height of 6 feet 8 inches, or 203 cm. Based on statistics from a data set, his e of 4.10.…

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Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given:  This lake is famous for cutthroat trout. A friend tells you that the average length of trout…

Q: Refer to the accompanying​ table, which describes the number of adults in groups of five who…

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Q: You are testing the claim that the mean GPA of night students is different than the mean GPA of day…

A: Given that  Claim : The mean GPA of night students is different from mean GPA of day students.…

Q: You want to be 95% confident that the sample standard deviation is within 40% of the population…

A: Appropriate minimum size = ?

Q: At McMeck High School they decided to calculate the average GPA of all 950 students.  The average…

A:

Q: A group of students take a Statistics Exam where the average was M = 85 and the standard deviation…

A:

Q: The mean is μgirl(s). (Round to one decimal place as needed.) The standard deviation is a = girl(s).…

A:

Q: The average salary for a food scientist is $66,000. The standard deviation is $1,500. а.) Draw and…

A: Note: “Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A:

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A: The mean response is 5.6, and standard deviation is 2.1.

Q: A group of students take a Statistics Exam where the average was M = 85 and the standard deviation…

A:

Q: How many minutes did it take him to finish the face?

A: It is given that the distribution of finishing time for men was approximately normal with mean 242…

Q: A national secondary achievement test is administered annually to high school students. The test…

A:

Q: *. The mean IQ is 100 points with a standard deviation of 15 points. a) What percent of the…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15) Here X is…

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a…

A: Given that mean =5.4,s.d =2.6 ​(a) What response represents the88th​percentile?​(b) What response…

Q: The amount of money raised by Clayton State teams for the Statistics Games is normally distributed,…

A: Given,mean(μ)=$360standard deviation(σ)=$15and data value(X)=$396

Q: group of students take a Statistics Exam where the average was M = 85 and the standard deviation was…

A: Given : M , μ= 85 and the standard deviation was SD , σ= 6.8 If you score a 96, what percentage of…

Q: An editor wants to estimate average the number of pages in bestselling novels, so that his estimate…

A: Given data: Margin of error  = 20 pages Standard deviation  = 65 pages Confidence levels ; 90 % and…

Q: The national mean for verbal scores on an exam was 428 and the standard deviation was 113.…

A:

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: From the provided information, Mean (µ) = 6.5 in Standard deviation (σ) = 0.9 in X~N (6.5, 0.9) Here…

Q: You plan to purchase a townhome and the average price of homes in the neighborhood you are looking…

A: It is given that the average price of homes in the neighbourhood is $400,000 and standard deviation…

Q: What is the correct test statistic table to use when you are comparing the mean weight of a sample…

A: For comparing the mean weight of a sample chairs when the population standard deviation is unknown,…

Q: The mean for the entire population of depressed people is 33.13 with a standard deviation of 5. If…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A: Quartile that separated or divide the data set into three parts as first quartile, second quartile…

Q: what percentage of the population scored above

A: Let , X→N(M=85 , σ=6.8) Our aim is to find the percentage of the population scored above.

Q: d. State the distribution to use for the test. e. What is the test statistic? f. What is the…

A: Answer:-  d)Here distribution used for the test is Student's t distribution.

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: The mean for the number of sleepwalkers in groups of five is,…

Q: You survey 5 of your friends regarding their score on a test. The results are as follows: 80 50 95…

A: Solution: Let X be the test score. The given data is 80, 50, 95, 90 and 70.

Q: What is the value for a score that has a z= +1.5 from population with a mean of μ=30 and a standard…

A: Z score = +1.5 Mean = 30 Standard deviation = 6

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A: Concept: Z score= (X-mean)/standard deviation

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: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: Class  frequency (f) Mid vaue (x) f.x f.x2 0-199 342 99.5 34029 3385885.5 200-399 86 299.5 25757…

Q: The rainfall in a town last year measured 59 inches. If the annual rainfall has a mean of 48.15…

A: It is given that the rainfall in a town last year measured 59 inches and the annual rainfall has a…

Q: The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation…

A: The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation…

Q: In a data set with a mean of 28 and standard deviation of 6, what is the value of the standard unit…

A: Given,   Mean = 28 Standard deviation = 6   The objective is to find the value of the standard unit…

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: Given a mean of 6.9-in and a standard deviation of 0.9-in.

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A:

Q: The average number of days spent on the road for business by business travellers is 115 per year.…

A:

Q: Contrary to popular opinion, a psychologist claims that the mean IQ score of math instructors is…

A: According to the given information in this question The p value is given  p value = 0.0014 p value =…

Q: How many of the sample of families would fall above 2 standard deviations from the mean? A. 0 B. 1…

A:

Q: A successful basketball player has a height of 6 feet 9 inches, or 206 cm. Based on statistics from…

A: According to the given information, we have A successful basketball player has a height of 6 feet 9…

Q: The population standard deviation for the age of a certain University students is 13 years. If we…

A:

Q: A high school student spends an average of 6 hours (#=6) on their phone a day with a standard…

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Q: Source: Chronicle of Higher Education. 7. Medical Operations The director of a medical hospital…

A:

Q: You are testing the claim that the mean GPA of night students is different than the mean GPA of day…

A: Given data, n1=60 x1=2.63 s1=0.56   n2=45 x2=2.62 s2=0.98   Test -statistic=?

Q: A random sample of 51 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: a)level of significance is α=0.01

Q: Executives at a car dealership want to estimate the average age of their custome before making a…

A: Margin of error

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.