n a recent study on world​ happiness, participants were asked to evaluate their current lives on a scale from 0 to​ 10, where 0 represents the worst possible life and 10 represents the best possible life. The mean response was 5.7 with a standard deviation of 2.3.   ​(a) What response represents the 86th ​percentile? ​(b) What response represents the 58th ​percentile? ​(c) What response represents the first ​quartile?

Q: The annual salaries for people in a particular profession are known to be normally distributed with…

A: Given that the annual salaries for people in a particular profession are known to be normally…

Q: Suppose you know the population average wage in the manufacturing industry in the U.S. is $26.72 per…

A: Type II error = P( Fail to reject Ho| When mu = 25)

Q: Based on the results that follow, do you think that the standard deviation is different from the two…

A: Let σ be the population standard deviation. Given that, Population standard deviation (σ)=2Sample…

Q: Lecture(10.2): The Peabody Picture Vocabulary Test has a standard score population mean of 100 and…

A:

Q: A hospital wants to compare its annual patient turnover rate per bed with similar hospitals. The…

A:

Q: The 19th percentile of the baby weights is pounds. Your answer is incorrect.

A: Given that.   X~N( μ , ?^2 )   μ=?     , ?=5.3   Z-score =( x - μ )/?

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

A:

Q: Ms. Hammell's Algebra 2 students took an exam. the results showed a mean of 78, with a standard…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

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

A: Given  μ=5.5,σ=2.5 Q1=μ-0.67σ Q3=μ+0.67σ

Q: You are given the following information for a sample (mean = 40; standard deviation = 10). What is…

A: According to the provided information:

Q: You are told that the mean income for graduating seniors is $58,500 with a standard deviation of…

A: Given μ=58500σ=4100 Majority of graduating seniors earn income between a and b is,…

Q: on the comprehensive final exam were normally distributed, and the z-scores for some of the students…

A: Given Mean =152 Standard deviation=21

Q: The scores of a standardized test are normally distributed with a mean of 500 points and a standard…

A:

Q: Consider the following means and their standard deviations. Which set of scores represents a more…

A: Mean =22 and s.d =3   Represent more homogeneous  data set i.e data scores are more similar to each…

Q: (a) What response represents the 92nd percentile? (b) What response represents the 63rd percentile?…

A:

Q: Suppose you know the population average wage in the manufacturing industry in the U.S. is $26.72 per…

A: true mean value = 25 mu = 26.72 s = 2.6

Q: imagine you’re hired by a beef company called “American Beef Makers” as a Data Analyst and you’re…

A: Please note that as per our guidelines if multiple sub-parts are there in a question we can answer…

Q: Second Hand Smoke: Cotinine levels were measured in a group of 40 non-smokers exposed to tobacco…

A:

Q: A sample of 111 motels is selected from a large urban area and the price for a night of lodging for…

A: Suppose the random variable x defines the price for a night of lodging for a single room for each…

Q: 1. Six major earthquakes had Richter magnitudes 7.0, 6.2, 7.7, 8.0, 6.4, 6.2. (a) What is the mean…

A: Solution

Q: In 2000 the average total charitable contribution in the United States (according to the IRS), as…

A: The question is about hypothesis testingGiven :Population mean charitable contribution per household…

Q: This year’s group of high school students did poorly on their final exams (M = 69, s = 11.3),…

A: Given information- We have given the mean and standard deviation of the high school students final…

Q: On a statistics examination the mean was 78 and the standard deviation was 10. (a) Determine the…

A: Step 1:Given :mean μ = 7standard deviation σ = 10 a) The standard score of the student whose grade…

Q: Question: A sample of 25 items has a mean of 45 and a standard deviation of 5. What is the standard…

A: Introduction: The standard error of the mean (SEM) is a measure of the variability of the sample…

Q: A sample of 82 motels is selected from a large urban area and the price for a night of lodging for a…

A: n = 82 = 91 = 13

Q: Health care issues are receiving much attention in both academic and political arenas. A sociologist…

A: The mean is 74 and the standard deviation is 9.7.

Q: The mean value of land and buildings per acre from a sample of properties is $11,800, with a…

A: The objective of this question is to find the range of values within which approximately 99.7% of…

Q: A sample of 134 motels is selected from a large urban area and the price for a night of lodging for…

A: Assume that the random variable x defines the price for a night of lodging for a single room for…

Q: more than or equal to this value less than or equal to this value more than this value ss than this…

A: We have given that,  The 75th percentile is a value such that at least 75 percent of the…

Q: The scores on a psychology exam were normally distributed with a mean of 56 and a standard deviation…

A:

Q: A learner has the following scores - an ACT composite score of 32 -an SAT mathematics score of…

A: Given For ACT x=32 Mu=21 Standard deviations=5.2 For SAT x=760 Mu=516 Standard deviations=116

Q: Scores on the Wechsler Adult Intelligence Scale for the 20 to 34 age group are approximately…

A:

Q: There are 11 employees in a particular division of a company. Their salaries have a mean of $80,000,…

A: Given Information: Number of employees = 11 Mean is $80,000 Median is $66,000 The standard deviation…

Q: Considering salary of employee's in a company, the mean salary of managers is $102,000 per year.  Is…

A: Considering salary of employee's in a company, the mean salary of managers is $102,000 per year.…

Q: "If the mean of a dataset is 50 and the standard deviation is 5, what is the z-score of the value…

A: Step 1: Given informationRaw score, X = 55Mean = 50Standard deviation = 5 Step 2: Z-scoreThe Z-score…

Q: At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort…

A: We know that ,A normal probability curve is bell shaped curve , and the area under the curve…

Q: A sample of 82 motels is selected from a large urban area and the price for a night of lodging for a…

A: The z score is a statistical measurement that describes a value relationship to the mean of a group…

Q: Suppose the people living in a city have a mean score of 35 and a standard deviation of 9 on a…

A: A normal distribution has a bell shaped which is centred at mean. The standard normal distribution…