1. You're taking a multiple-choice exam and you don't know the answers to two of the questions. Each question has five choices, so the probability of getting a question right by guessing is .20. Draw a tree diagram showing the probabilities of getting none, one, or both questions right by guessing.

Q: The key to making sound decisions is to know what information is needed to make an abrupt decision…

A: Given statement, The key to making sound decisions is to know what information is needed to make…

Q: Briefly describe the methods of collecting primary data

A: The objective of this question is to understand the various methods of collecting primary data in…

Q: The authors of an article found that the speed of a prey (twips/s) and the length of a prey (twips x…

A: a) Let Y=catch time, x1=prey length and x2= Prey speed R code: From the output, The multiple…

Q: What do you mean by Standardized Variables?

A: Standardized variables: Standardized variables are the variables which are rescaled using the…

Q: The variance of the data :. 6 ,6 ,-6,-6 is equal to

A: Find variance of the data  6 ,6 ,-6,-6

Q: How can one locate mode graphically in case of grouped data?

A: Given: We need to locate mode graphically for grouped data.

Q: The r code for side by side boxplot of vitamind v newage and vitamin d v country. Scatterplot code…

A: The data frame is named "Data" and the variables in it are Country, Sun_Exposure, Gender, NewAge,…

Q: An business reviews data on the daily amount of calls it receives. Are the data discrete or…

A: Discrete Variable: A variable which assumes only specified values within a given range is a discrete…

Q: Define Data types each with examples?

A: Data are nothing but the actual pieces of information that we collect through our study.The…

Q: Statisticians are often called upon to develop methods to predict one variable from other variables.…

A: Regression analysis estimates the effect that changing one independent variable has on the…

Q: Distinguish briefly the Parameters and statistics

A: A parameters is a values that describes some aspect of a population . A parameters may be very…

Q: State one disadvantage of displaying data in groups?

A: Statisticians or researchers collect, display and analyze the data for their purposes. After…

Q: The quadratic model for the given data is wrong.

A: By using regression to find a quadratic model for the given data. x 0.6 0.7 2.6 4.7 5.3 y -5.6…

Q: What is the Sum of Squares Formulas for Population?

A:

Q: What is the similarities of parameter and statistics

A:

Q: please do with rstudio and provide all the codes.

A: The objective of the question is to analyze the relationship between the age of the shopper and the…

Q: The U.S. state of Wyoming hired an education firm to implement a program to help students in…

A:

Q: For qualitative data, the mode is the best measure of center. True

A: Given data: For qualitative data, the mode is the best measure of center. Answer: True or false

Q: The mode for the data : 22,17,18,25,22,52,27,33 is equal to

A: From the given information,  it is clear that,  The data is, 22, 17, 18, 25, 22, 52, 27, 33 First we…

Q: The variables are the columns of a dataset.

A: Here we want to know given statement is true or false.

Q: Before using these mean squares what does we must calculate?

A: Mean squares is nothing but the sum of the squares of the mean of the group   divided by the degrees…

Q: Indicate that they are qualitative and quantitative data, give 2 specific examples and indicate when…

A: To give examples of qualitative and quantitative data and provide the definition

Q: How do you find the median of X?

A:

Q: I need help with identifying the independent and dependent variables in excel.    Explain the…

A: The dependent variable is Earnings and the Independent variable is Sales. Earnings of the company…

Q: According to your textbook, the dependent variable is also called the    measure.  criterion.…

A: The dependent variable is the variable which is being measured or under the test of the model.…

Q: why do you think the data presented this way?

A: The 2 different factors considered are: Human Factors Land Use Ozone Aerosols Greenhouse…

Q: How can In-depth interview help a researcher obtain a data from you?

A: Interviews are used to collect data across all educational research fields. There are different…

Q: What are two variables that will be can be used in a  chi-square analysis based in social work? What…

A:

Q: Slicers allow for simple filtering of data in a row or column. True False

A: Slicers are simple command in Excel

Q: The mean of the data set {9,5, y, 2, x} is twice the data set {8, x, 4,1,3}. What is (y- x)2?

A:

Q: Please please how to write if based on the following IF Based on the tables and charts presented…

A: Given information: The output of ANOVA is given.

Q: How do you make the z-tables that go with this question?

A: We have been asked how to make z tables in the exam

Q: Explain the concept and use of the method of Least Squares

A:

Q: Do you find any inconsistency in the data given below: N= 1,000, (AB) = 483, (Ay) = 378, (BY) = 226…

A: Given that, N = 1000, (Aβ) = 483, (Aϒ) = 378, (Bϒ) = 226, (A) = 525, (B) = 312, (C) = 470 and (ABC)…

Q: Explain the concepts of statistical sample and population in terms of discrete and continuous data…

A: A sample is a subset of data taken from a population—a bigger group—in statistics. The sample is a…