Identify which sampling method is applied in the following situations. 1. The teacher randomly selects 20 boys and 15 girls from a batch of learners to be members of a group that will go to a field trip. 2. A sample of 10 mice are selected at random from a set of 40 mice to test the effect of a certain medicine. 3. The people in a certain seminar are all members of two of free groups are asked what they think about the President.

Q: 8. Three thousand fifty-nine cases of AIDS had been reported in Santa Clara County, CA, through a…

A: event   A : obtained disease through hetero sexual contact B : female   P(A) = 0.064 P(B) = 0.074…

Q: A bank has two different customer lines, A and B. Callers dial a single number with 444. Customer…

A: Given information- We have given two sample- For sample 1- Sample size, n1 = 200 Sample mean, x1-bar…

Q: 1. A lecturer is interested in finding out if tutorials help students to learn better. He divides…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Maris wants to learn more about fine art.  Select the option below that will result in Maris taking…

A: Maris wants to learn more about fine art.  Select the option below that will result in Maris taking…

Q: 2 16.-17. ts) In an election for governor, 30% of the voters in the state voted for candidate A, 50%…

A: The given voting percentages of candidates in the state are:CandidatePercentageA30%B50%C 20%The…

Q: A manufacturing company has 5 vice presidents: Andrew, Beth, Charles, Diane, and Eric. Their…

A: The formula for combination is nCr = n! / [r! (n – r)!] = [n (n – 1) … (n – r + 1)]/r!. Explanation:…

Q: Researcher wants to find how much of the population like soccer.   He sets up three samples 6/13…

A: A sample, that tends to favor a certain outcome over others and leads to a misrepresentation of the…

Q: for him?  Use stattrek.org to calculate your answer .8698 .1302 NONE OF THE OTHERS .2530 .2633

A: Given data number of success , x= 4 sample size, n =40 population proportion,p=…

Q: 16. Jason wants to determine how age and gender are related to political party preference in his…

A: Two random samples of men and women are taken.

Q: Determine if the samples are related or independent  a. A science teacher has developed new…

A: A science teacher has developed new teaching materials and wants to evaluate the effectiveness of…

Q: id-aisle promotional display. To t select 20 stores from the AE storewide sales volumes. You th 1…

A: X1 X2 num Normal  End Aisle 1 22 52 2 34 71 3 52 76 4 62 54 5 30 67 6 40 83 7 64…

Q: A lecturer in a university wants to investigate the differences in students’ marks with the…

A:

Q: Defective Göod Défective lom sample of size five without replaceme sampling distribution of sample…

A:

Q: Which of the following is an example of a voluntary response sample? a. Professor sends…

A: Answer: voluntary response sample: People who choose themselves by responding to general opinion.…

Q: Data from a National Geographic survey show that the distribution of left-handedness throughout the…

A: The percentage of people that are left-handed is 10.7% There are 8 people. Define X as the number of…

Q: A company is started by four friends. The company was Erica’s idea, so she wants to fill 70% of the…

A: The chi-square test statistic for goodness of fit is χ2=11.20 and the P-value is between 0.01 and…

Q: Suppose you are assigned the number 1, and the other students in your statistics class call out…

A: In this case, we need to choose correct answers for the given statements.

Q: 1. The teacher randomly selects 20 boys and 15 girls from a batch of learners to be members of a…

A: According to our guidelines we can answer only three subparts and rest can be repost.

Q: In a large clinical trial, 393,031 children were randomly assigned to two groups. The treatment…

A: The proportion is the measure of favorable and total observations. It never takes a negative value.…

Q: 3 Data was collected from 2 random samples of 50 students regarding their favorite candidate running…

A: The objective of this question is to find out the expected number of students who would favor…

Q: A company wants to know the effect of sponsorship given in a sports competition on the sales value…

A: Given Information: Sample size n=200 Before the scholarship: Number of people who bought the item is…

Q: Stock prices: The Standard and Poor's (S&P) 500 is a group of 500 large companies traded on the New…

A:

Q: One jar contains four balls labeled 1,2,3, and 4. A second jar contains four balls, labeled 1,2,3,…

A:

Q: To determine thế favorite type a. Ask shoppers that walk in the music store. h. Ask shoppers that…

A: It is asked to identify which sample is more likely to be random. Ask shoppers that walk in the…

Q: 2. A clothing manufacturer wants to determine whether millennials prefer any specific brands over…

A: Formula : Test statistic :

Q: A travel agency is interested if there is a difference in preference for U.S. city as a favorite…

A: Hypothesis : H0 : There is not significant difference in preference toward favorite U.S. cities to…

Q: 11. In a recent Presidential election, the population that voted was broken down by gender and party…

A: The given data is   Democrat Republican Male 0.22 0.25 Female 0.3 0.23

Q: A school psychologist wants to test the effectiveness of a new method for teaching reading. She…

A: A completely randomized design is one in which the assignment of sample units (subjects) to two or…

Q: Q. There are three commercial television channels in a particular market, each broadcasting its own…

A:

Q: 5. Explain the sampling strategy and potential bias for the following situations. a. Bob is…

A: Determine the sampling strategy and potential bias in the following condition. a) Here we can see…

Q: A family decides to go on a one-day excursion. For the day of the week, the family can choose to go…

A: Basic probability

Q: After a product recall, a company solicits feedback from a random sample of 100 customers regarding…

A: 100 customers : 38 approved 45 disapprove 17 no opinion We have test :  chi-square test statistic…

Q: A bank has two different customer lines, A and B. Callers dial a single number with 444. Customer…

A:

Q: Have the requirements for a one-sample t-test been met? If they have not been met, leave the…

A: Yes, Mairin selected a random sample from a normally distributed population, and her sample contains…

Q: 6. A study attempts to compare two sunscreens. Each of 50 subjects with varying skin complexions…

A: A matched pairs experimentcan be designed when there are only two possible treatment…