As reported in Runner's World magazine, the times of the finishers in the New York City 10- km run are normally distributed with mean 61 minutes and standard deviation 9 minutes. The 75th percentile for the finishing times is 67 minutes. What is the interpretation of this value?

Q: Researchers conducting a study of 15 children with a diagnosis of ADHD wish to assess whether the…

A: The BMI of 15 children is given.

Q: A researcher collects data from 50 different individuals and wants to understand the correlation…

A: The objective of the question is to determine the degrees of freedom in a correlation analysis…

Q: Two different surveys will be conducted to estimate the mean salary of employees who have taken a…

A: The confidence interval inversely depends on the sample size. The formula for the confidence…

Q: A set of 100 values has a median value of 40. What is the value of the 75th percentile in this set…

A: Introduction: Percentiles are used in statistics to divide a set of numerical values into 100 equal…

Q: Find the mean and the standard deviation for these ages. b) Draw the boxplot and explain what it…

A: When the data is provided , we can give insight to the data by doing certain plots . Also by…

Q: Angela wants to estimate the mean number of siblings for each student in her school. She records the…

A: Explanation:Here, estimate the mean number of siblings for each student in Angela school. Moreover,…

Q: A company manufactures batteries in batches of 6 and there is a 3% rate of defects. Find the mean…

A: Given Information: n= 6 p= 3%  To find out the the mean number of defects per batch.

Q: A teacher found that the mean number of hours her 12 students spent studying for an AP Statistics…

A: old mean for 12 students = 6.7 sum of 12 students = 6.7*12 = 80.4

Q: final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%.…

A:

Q: Oprah Winfrey is said to have a Wechsler IQ z-Score of 2.73. What does that mean about her…

A: Oprah Winfrey is said to have a Wechsler IQ z-Score of 2.73.   What does that mean about her…

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: The mean monthly food budget for 44 residents of the local apartment complex is $⁢617. What is the…

A: The sample mean is given as $617.

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

A:

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated.

A: Population standard deviation, σ =3 inches Sample size n=6

Q: On five exams, Rachel has a mean score of 80 points. Her lowest score was 50.  If this score is…

A:

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 47, 15, 25 Round your…

A: Given data: scores; 45, 34, 65, 47, 15, 25 To find: standard error of the mean

Q: Suppose there are 5 students in a room. The mean age is 20.0 years, and the median age is 19. If the…

A: From the provided information, There are 5 students in a room. The mean age is 20.0 Years. The…

Q: Population (N) Standard Deviation Mean Median Mode Managers (21) 60.52 70 9.28 Employees (29) 52.79…

A: We have given that the mean, median, mode and standard deviation of employees and managers in the…

Q: As reported in Runner's World magazine, the times of the finishers in the New York Cit km run are…

A:

Q: The mean earning of men in Florida differs significantly from the mean earning of men in Texas. If…

A: Sample sizesn1 is 123 and n2 is 88.

Q: A data set has five values. The 45th and the 55th percentile are both 25. The largest value is 125,…

A: We have to given that,   data set has 5 values i.e. n=5 and 45th percentile = 55th percentile = 25…

Q: The number of tickets purchased by an individual for Beckham College's holiday music festival is a…

A: It is an important part of statistics . It is widely used .

Q: The mean score of 8 players in a basketball game was 14.5 points. If the highest individual score is…

A: Given; Mean score of 8 players is 14.5 and mean score of 7 players is 12.

Q: A nurse practitioner is studying the effects of sugary drinks on weight gain. To begin the study,…

A: Let us suppose the sample size equals n = 100 From the give relative frequency histogram we have the…

Q: The scores and the percents of the final grade for a student in a stats class are given. What is the…

A: The student’s mean score is calculated below:

Q: If a set of exam scores forms a symmetrical distribution, what can you conclude about the students’…

A: The set of exam scores forms a symmetrical distribution.

Q: The following are ages in years of nine employees of a large company. 46, 22, 35, 26, 22, 53, 33,…

A: The question is about measures Given : Data : 46, 22, 35, 26, 22, 53, 33, 42, 59   To find : Mean…

Q: The following are two data sets on car dealership sales at two dealerships. Which data set has the…

A: The standard deviation formula: standard dveiation = ∑xi-x2n-1Here,Xi= sample valuesx = sample meann…

Q: A data set includes 104 body temperatures of healthy adult humans having a mean of 98.7°F and a…

A: we have given that  sample mean(xbar)=98.7 sigma =0.66 and sample size n=104 We need to construct…

Q: Male and female athletes exercised for an hour on a treadmill. During this time, half of each sex…

A: To use: What statistical test should be used to see how sex and type of beverage affect lactic acid…

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 14, 15, 25 Round your…

A: Given data: 45, 34, 65, 14, 15, 25 n = 6 To calculate: Compute the standard error of the mean

Q: Compare the mean, median, and mode in terms of their sensitivity to extreme scores

A: The question is about measures Introduction : Extreme scores : The score or observation which is far…

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

A: x p(x) xp(x) (x-xbar)^2 p(X)*(x-xbar)^2 0 0.192 0 2.027776 0.389333 1 0.367 0.367 0.179776…

Q: Please match each of the research studies below to the following :  - Difference between means -…

A: In a research study, the parameter of interest is essentially based on the quantitative…

Q: C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals should have…

A: Given information: GSS 2014 and GSS 2018 respondents were asked their opinion on whether…

Q: Males Females Mean 2.83 2.33 3.54 2.64 p = 0.4606

A: Given : Data   MALE FEMALE MEAN 2.83 2.33 STANDARD DEVIATION 3.54 2.64 Mean: It is the…

Q: Hurricane Damage Find the percentile rank for each value in the data set. The data represent the…

A: Given data  2.3,3.3,6.2,7.9,9.6,11.3 N =6

Q: Identify the level of measurement of the data , and explain what is wrong with the given…

A: Nominal: The level of measurement is nominal when the observations are defined in terms of…

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given that there are 24 families in the sample.  Mean=31 Median=27.2 7th percentile= 16 hours

Q: Speed (km/hr) Number of Players 10-13.9 The data to the right represent the top speed (in kilometers…

A: Speed Number of players 10 - 13.9 3 14 - 17.9 6 18 - 2.9 14 22 - 25.9 75 26 - 29.9 257…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: A study of new home prices was conducted in a neighborhood of 2000 homes. The median price of a new…

A: It is stated that: The number of new homes included in the study is 2000.  The median price of a new…

Q: From the states data set, get the descriptive statistics for the violent crime rate. For this…

A: given data

Q: The histogram shows the ages of 25 CEOs listed on a certain website. Based on the​ distribution,…

A: The histogram shows the ages of 25 CEOs.Given histogram is like a symmetric histogram.