How many degrees of freedom do you have for a two-group T test? If you have 40 subjects in one group and 50 subjects in the other?

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A: Given problem Given that   A building contractor has a chance to buy an odd lot of 1000 bricks at an…

Q: In a study of whether smoking causes lung cancer, researchers examined 2000 people.  About half of…

A: Four percent of the smokers developed heart disease by the end of the study period, whereas only one…

Q: 22. How many degrees of freedom (df) are in this study?

A: Given that  n=6  There are 6 observation

Q: Group A is a sample of 15 people Group B is a sample of 15 people What are the total degrees of…

A: Given data isGroup A sample size(n1)=15Group B sample size(n2)=15

Q: Tokyo 2020 Exit Ticket lUSA SWIMMING Last night on Spartan: Ultimate Team Challenge, members of Team…

A: Given information:   1st Member 2nd Member 3rd Member Team A 12.256 11.8 12.14 Team B 12.75…

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A: The data of two categorical variables is recorded in two way contingency table. First column of the…

Q: Does the example represent an observational study or an​ experiment? Car accident data is obtained…

A: Given: Car accident data is obtained from the Ohio database. It is found that more accidents…

Q: Using the pigeonhole principle: In a 20-item quiz, at least how many of the 35 students can have…

A: The pigeonhole principle is used in the condition when there are n items that are to be allotted to…

Q: In a one-sample z-test, ___________ groups are being tested. Three Two or more Two  One

A: Z_test: If the given sample size is more than 30 or Population standard deviation is given. then…

Q: In an experiment for a new drug, to determine the most effective dose and method of administration,…

A: Combination of factor at known as treatment.

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A: An experiment has four steps with three outcomes possible in the first step, four possible…

Q: A group of cruise guests were surveyed about their taste in music. They were asked how they liked 3…

A: Let's denote Rock as R , Western as W and classical as C. It is given that no one dislikes all the…

Q: The degrees of freedom of correlation test are determined by ______. Group of answer choices n n–2…

A: Given information: The degrees of freedom of correlation test

Q: 11. How many degrees of freedom (df) are in this study?

A: Given that  Total number of participant n=7 Degree of freedom =df = n-2

Q: researcher found that 85% of white ash trees in Pennsylvania are damaged by the emerald green ash…

A:

Q: According to Facebook, the average user has 130 Facebook friends. A student a Seattle Central tests…

A: In the given problem, it is given that the A student at Seattle Central tests claims that the SSC…

Q: A building contractor has a chance to buy an odd lot of 1,000 used bricks at an auction. She is…

A: A building contractor has a chance to buy an odd lot of 1,000 used bricks at an auction. She is…

Q: The total degrees of freedom for an experiment with n1 = 10, n2 = 12, and n3 = 10 is ________.

A: It is given that the total number of observation in the experiment is 32.

Q: When finding the t-value, how many degrees of freedom do we have from a sample size of n=10?

A: Degrees of freedom = n-1

Q: You construct a sample in which Whites, Blacks, and Latinos are randomly selected from the U.S.…

A: Given that, Construct a sample in which whites, blacks, and Latinos are randomly selected from the…

Q: 73. In a city three daily newspapers X, Y, Z are published, 40% of the people of the city read X,…

A:

Q: An Experiment has four steps with three possible outcomes in the first step, four possible outcomes…

A: There are four steps with three possible outcomes in the first step, four possible outcomes in the…

Q: Suppose you have data on all the folks that have ever eaten at Culverís (a fast food chain popular…

A: Given information: The data on all the folks that have ever eaten at Culveri’s is considered in the…

Q: A researcher wants to conduct an experiment to determine which environment is best suited for…

A: The objective is to find out the number of blocks in an experiment conducted on 30 university…

Q: A) In a study on treatments for anorexia, researchers recruited 30 teenage girls with anorexia. The…

A: We have to answer objective questions.

Q: A researcher conducts a study to determine whether spending time outdoors improves happiness. She…

A: (a). Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: che among group degrees of freedom is

A: Number of neighborhoods, k = 4

Q: Give a table with the expected counts for each of the 10 cells. Round your answers to two decimal…

A: Solution-: Hypothesis:  The way people choose their favorite Skittles type, by color or flavor,…

Q: how many ways could 2 contaminated farms and 8 noncontaminated farms be chosen?

A: Soil Samples An environmental agency is analyzing soil samples from 50 farms for lead contamination.…

Q: A group of cruise guests were surveyed about their taste in music. They were asked how they liked 3…

A: This problem can be done by drawing Venn diagram or writing in form of set expression, here below…

Q: many ways can you assign participants to the two groups?

A:

Q: 1. A class in Engineering Data Analysis consist of 6 women and 4 men. Their grades are calculated,…

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

Q: A researcher believes that students do better on a reading test when hearing a constant background…

A: Given Data table: Constant Sound Random Sound No Sound 5 6 5 3 3 2 7 8 4 6 5 8 10 7 3…

Q: both sexes, how many selection options are available if 11 men and 17 women are to be selected for…

A: Since it is a group of people so order does not matter. So, we will use combination. We can pick 11…

Q: How many participants had anxiety but not nausea? I participants How many participants had anxiety…

A: It is given that there are 161 participants. It is also given that 84 had anxiety, 67 had nausea and…

Q: For which quartile, 25% observations are greater and 75% are smaller A. Third quartile B. Second…

A: to find For which quartile, 25% observations are greater and 75% are smaller

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A:

Q: mates. Some shrubs can resprout from their roots after their tops are destroyed. One study of…

A: Note: Since the given example is based on manual calculation and you have asked in calculator…

Q: A study contained four treatment conditions with n 5 participants in each group. What is the value…

A: Question 6: There are 4 treatment conditions with n=5 participants in each group.

Q: 2. A scientist is studying the effect of exercise on blood pressure. He studie 20 people who…

A: An observational study is a study where a researcher uses observed information to learn or study…

Q: Consider the spinner shown. All sections of the spinner are the same size. How many possible…

A: Given: All sections have the same size in the spinner.One section will be chosen at a time, out of…

Q: True or false? A population has p = 20 and u = 5. If five points are added to every score in the…

A: In statistics, adding the constat points affect the mean but not standard deviation. But multiplying…

Q: Group A is a sample of 15 people Group B is a sample of 15 people What are the degrees of freedom…

A: Givensample size(n1) for Group A = 15sample size(n2) for Group B = 15

Q: A researcher believes that students do better on a reading test when hearing a constant background…

A: To test if there is a significant difference between any of the types of sounds: State the…

Q: How many degrees of freedom will be used for the test?

A: here given , According to the Stanford School of Medicine Blood Center, blood type for Americans is…

Q: by which criteria?

A: Apologies for the inconvenience. Here is the correct solution.   If a series ∑n=1∞an has either…

Q: Difference between two populations P1 and P2 can give results as?   a P1+P2   b P1 > P2   c…

A: The difference between two populations P1 and P2 can be written as P1>P2

Q: 4) A survey for 500 children is conducted in a town. The results show that approximately 53 % liked…

A: We will construct a Venn diagram according to the given informations.  Let C, F and R be the set of…

Q: Statistical tests are more accurate if there is a sample size of n > 30. how will a sample size  of…

A: It is given that the sample size is n=20.

Q: A building contractor has a chance to buy an odd lot of 1,000 used bricks at an auction. She is…

A: Our population of interest would be the one from which we have taken the sample and on the basis of…