Which of these countries has the greatest population density? Which has the least? Pro

Q: A research report from an independent-measures study states that there are significant differences…

A: a)From the given information, the degrees of freedom treatment is 3.

Q: Accident data were analyzed to determine the numbers of fatal accidents for automobiles of three…

A: Given:   Small medium large Fatal 67 26 16 Non Fatal 128 63 46

Q: Members of fraternities and sororities are required to volunteer for community service. Do…

A: When one variable not related to the other then we say they are independent observation. If the…

Q: 1) Estimate the population mean of the number of customers entering the restaurant each day.

A: Here use formula of Mean, variance, median  And here ascending order of data  18,19,20,25,31,42

Q: The indicated IQ score, x, is

A: Let X represents the distribution of IQ scores. Given that X~N(mean= 100, SD= 15), then Z = (X -…

Q: what is an average

A: You want a meaning of average.You know average is also called as mean which is one of the Measures…

Q: what key assumption did you make to determine your answer for the size of the population

A: To determine the size of the population, the following assumptions are  made:   1)      The…

Q: measures the size of an effect in a population, whereas measures whether an effect exists in a…

A: Effect size is a value which measures the strength of the relationship between two variables in a…

Q: Find the Lower Quartile Lower Quartile, Upper Quartile, Lower Extreme, Upper Quartile Lower Extreme…

A: Values are already in ascending order. 10, 15, 20, 25, 30, 35, 40 n=7 Median (Middle value)=…

Q: Define the term Homoscedasticity?

A: One of the assumptions of the Classical Linear Regression Model (CLRM) is homoscedasticity. It…

Q: What is the formula to find weighted mean.

A: Weighted Mean: A mean in which some values are more important than others.

Q: Which group has the largest number of data points?

A:

Q: How many people at the clinic have blood type AB? Which blood type does the least number of people…

A: A survey is a method of collecting data from the respondents to collect information for the…

Q: A Sample of 25 cities have been classified as high or low on their homicide rates and on the number…

A: The formula for chi-square is, χ2=∑fo-fe2fe In the formula fo is the observed frequency, fe is the…

Q: se a study revealed 5*

A: Given, a study revealed 57% of all subjects possessed trait A, 28% possessed trait B, and…

Q: A ball is dropped from a height of 10

A:

Q: requires

A:

Q: What is the pack efficiency of the tennis ball can?  That is, the 3 tennis balls represent what…

A: Given: 3 tennis balls are packed in a tennis ball can. The objective is to find the packing…

Q: What does "degrees of freedom" measure?

A: Degrees of freedom indicates the number of independent variables that can vary without breaking the…

Q: In 2010, the U.S. Congress passed the historic health care reform bill that will provide some type…

A: Answer: Null hypothesis: Being insured or not doesn't depends on the age groups identified in the…

Q: 9. Which data set has the greatest coefficient of determination ()?

A: here use concept of correlation and coefficient of determination

Q: how many sports played male vs female based on the data

A: Given, The number of sports played by the students: Grade Number of students 9 16 10 13 11…

Q: Ten out of every 32 people surveyed play among use. What percent of people surveyed play among use

A: 31.25%   See the attachment

Q: Define the term scatterplot?

A: A scatter plot  is a type of plot or mathematical diagram using cartesian coordinates to display…

Q: We take an educational are presente :012 data se

A: Given : Less than High school(1) Some college(2) College Graduate 1 2 1 4 3 1 2 2 1 2 2…

Q: According to health statistics taken to observe obesity in men 6 feet or taller: A = 250 pounds is…

A: Note: Thank you for the question. Since multiple questions are posted, we are answering the first…

Q: Brunt, Rhee, and Zhong (2008) surveyed 557 under- graduate college students to examine their weight…

A: Given to us that; A sample of n=25 students classified as healthy weight completing the food variety…

Q: (a) Is purchasing music online independent of the consumer's age? Use a = 5%.

A: In this context, the aim is to test whether the purchasing music online is independent of the…

Q: The data shown in the boxplots shows monthly sales revenue figures ($ thousands) for a discount…

A: here given , three box plots of atlantic, central, and west respectively and IQR = third quartile -…

Q: At the beginning of 2018, a survey showed that a country with a total land area of 500,500 square…

A: Given that,  at the beginning of 2018, a survey showed that a country with a total land area of…

Q: What is the maximum value for the data set? 5678 9 10 О 15 O 6 7.5 O 4

A: The given question has been solved in detail and option (B) is the correct answer

Q: What are the examples of population?

A:

Q: (a) What proportion of babies born full term are low-birth-weight babies? (b) What proportion of…

A: From the given information, let X be the full term baby birth weights. Here, X follows normally…

Q: The NBA commissioner wishes to know how many hours per day NBA players watch TV. He sampled the…

A: Given data, 4,2,6,1 Find the sample mean and sample standard deviation?

Q: Find the coefficient of variation using the given information median nl 3.5 4 15

A: Provided information: Median=3.5, X bar (Mean)=4 ∑(Xi-X bar)2=15,  n=7 The variance of X is given…

Q: What is population size?

A:

Q: What are the maximum and the minimum numbers of cell phones sold in a day? b. What is a typical…

A: a. From the chart, the maximum number of cell phones sold in a day is 19, and minimum number of cell…

Q: A dataset has an average of 4/3. There are 50 elements in the dataset. What is the total of the…

A:

Q: A point estimate of a population consists of how many numbers?

A: Solution: Point Estimation: Point estimate is type of estimation in a statistics. In  the point…

Q: The mean # of hours worked

A: To find the mean number of hours worked by college students outside the home: Mean is a measure of…

Q: Which orchard has the highest rate of apples per tree?

A: Here it is given that the three apple orchards and each orchard has a different number of trees and…

Q: 3. Which box plot has the largest interquartile range?

A: we are given various quartile plots in the figure

Q: The length of a fully grown hibiscus plant is normally distributed and has a mean 35cm. It is found…

A: Given information: μ=35, σ=? x = 45 Px>45=0.05

Q: A data value of 99 corresponds to a standardized value of

A: Given: Consider a random variable X follows Normal distribution with the mean μ and standard…

Q: A male apparel company surveyed men t results are summarized below:

A: Given,  the table Years    Percentage Less than 1 year         16% 1 - 4 years         62%…

Q: Define variables sampling.

A: There are two kinds of sampling inspection:- Sampling inspection by variables Sampling inspection…

Q: What is the population density of the U.S.? Population: 301,139,947 Area: 5,692,955

A: Population density is given by the ratio of population to Area of land.

Q: Data were collected on how many total hours over the weekend (Saturday and Sunday) community college…

A:

Q: A research report from an independent-measures study states that there are significant differences…

A: Given, A research report from an independent-measures study states that there are significant…

Q: D. 60 percent of all children spend at least how many hours per day unsupervised? hours.

A: Given that  X ~ N ( μ =  3 , σ = 1.5 ) μ = 3  , σ= 1.5 Formula for Z-score Z = ( X - μ ) / σ

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.