In 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 5.4 with a standard deviation of 2.4. ​(a) What response represents the 90th ​percentile? ​(b) What response represents the 63rd ​percentile? ​(c) What response represents the first quartile?

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

A: μ=5.4, σ=2.6

Q: (7) The commuting distance(in miles) for 12 students is listed below. 11.5, 21.9, 12.7, 9.0, 19.2,…

A: 7)Given data is11.5, 21.9, 12.7, 9.0, 19.2, 18.5, 19.3, 1.9, 19.2, 0.8, 28.8, 17.7

Q: n this scenario, what is the test statistic? A linguist believes the average age children learn a…

A: Given: n= 21.0 ,x̄= 9.2 ,s= 2.5 µ= 10.0 ,degree of freedom= 20.0

Q: I have attached a picture! Thank you!

A:

Q: Answer the questions below. (a) The 9 participants in an experiment had the following reaction times…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: You invented an iPhone app. The mean time that users engage with this app is 8.2 minutes and the…

A: The mean is 8.2 minutes and the standard deviation is 1 minute.

Q: Do the data support your claim at the 1% level?

A: The summary of the statistics is, The type of test is right tailed test

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Introduction: Denote the random variable, Denote X as the number of hours of sleep on a weeknight.…

Q: The graphs below represent two distinct Standard Deviations from two separate samples.A) Which of…

A: Solution: A. From the graph on the left, it can be observed that the frequencies for all the scores…

Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

A:

Q: What is the sum of the deviation scores for the data in the frequency distribution table below?

A: Sum of deviation  of scores from mean is always zero.

Q: A nutritionist seeks to conduct a clinical trial on the effects of eating papaya on cholesterol…

A: Answer D. What is the minimum number of people I need for the study?

Q: Psychological and educational tests, including MMPI are often designed so they have a mean of 50 and…

A: Given: Mean μ=50 Standard deviation σ=10

Q: professor who teaches a large introductory statistics class (197 students) with eight discussion…

A:

Q: For 100 randomly selected adults, compute the mean and standard deviation?

A: A recent poll found that 47% of adults believe that the overall state of moral values is poor.Here…

Q: Explain the term "deviation scores"?

A:

Q: Consider a dataset with standard deviation 2, mean 6.2, and a total of 186 data points. What is the…

A: The given data is - Standard deviation (σ)=2 Mean(x)=6.2 Sample size(n)=186

Q: Find standard deviation of each sampling distribution

A: here  given, According to a gallup survey of boys 77% of boys had played computer games in the past…

Q: A TV weatherman end of the year analysis of the local weather showed that among all the years for…

A: Z-score: The Z-score measures a particular value’s relationship to the mean, in a group of values.…

Q: Male students in a Calculus 1 course at ASU self-reported their heights in inches. The data below…

A: Given the data of a Calculus 1 course male students height in inches asHeight in…

Q: what does the mean and the standard deviation represent in data set? how would i interpret the…

A: Mean and standard deviation in data set:The mean represent the average value in a data set. In other…

Q: A researcher collected data on the palate length of 50 individual shrews of the same species.. She…

A: In this question, a researcher has collected data on the palate length of 50 individual shrews of…

Q: What percentage of computer programmer major received a starting offer between $32000 and $38000?…

A: The following information has been provided: \mu = 39269, \text{ } \sigma = 2550Mean : μ=39269,…

Q: An article in the San Jose Mercury Newsstated that students in the California state university…

A:

Q: credit score is used by credit agencies to assess the creditworthiness of individuals. Values range…

A: Sample size n =24 Sample mean=735.6 Standard deviation =74.5 NOTE:- According to bartleby guidelines…

Q: For the normal distribution of burning times of electric light bulbs, with a mean equal to 1200…

A: given data μ = 1200σ = 120normal distribution