If I am to conduct research which involves a population of 2000 people, how many people would I need to have my questionnaire answered to consider my quanitative study valid?

Q: any companies want to target teenagers in advertisements by taking advantage of teenagers being…

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Q: what is  discriminant ?

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Q: The essential difference between an experiment and an observational study is that ... O a…

A: Meaning: An observational study in an experiment is defined as a study where the research does not…

Q: A researcher finds that talking on the phone while driving does not distract you from the road but…

A: type 1 error: reject the null hypothesis when it is true type 2 error: fail to reject the null…

Q: Use the answer in item 4 to fill in the blanks. In the UK, if you are you are times more likely to…

A: Absolute risk is also known as risk difference. It helps to measure the chance of occurrence of…

Q: Can you give a scenario for e and f please?

A: The scenarios for given combinations are as shown below.

Q: Suppose a professional basketball player historically makes 39% of his three-point field goals.…

A: The null hypothesis can be defined as the hypothesis of no difference or equality, while the…

Q: . In order to gather data for 'what users think about a new product', only the existing users'…

A: Given information: Sampling procedures are given to identify the bias.

Q: 3. The manufacturer of a patent medicine claimed that it was at least 90% effective in relieving…

A: Null hypothesis states there is no statistical relationship between the two variables. Alternative…

Q: When is applied research, as distinct from basic research, useful?

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Q: aul received a score of 70 on a history test for which the class meam ass? biology test O history…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

Q: ) A person has type A blood, given that the person is Rh -.

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Q: What is the difference between single and double blinding?

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Q: results from a scholastic assessment test are sent to test makers, the percentiles associated with…

A: Provided information is, results from a scholastic assessment test are sent to test makers, the…

Q: Meteno’s products account for 59% of the U.S. snack chip industry, and there are more than 45,000…

A: The test has two complementary hypotheses, the null and the alternative hypothesis. The null…

Q: The answers that were given were said to be wrong I'm using Hawkes Learning

A: Find your  correct answer below

Q: In a big city 325 men out of 600 men were found to be smokers. Does this information support the…

A: We have given that Sample size n = 600 Favorable cases x = 325 Sample proportion p^=x/n = 0.5417

Q: Is my work right? I feel like I did something wrong.

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Q: The Shake Out Earthquake Scenario is based on a magnitude 7.8 earthquake and serve as the basis for…

A: Given that the magnitude is 7.8 Mean is μ=2.5723 standard deviation, σ=0.6505

Q: Is the fo llowing mtegral conuergent or divergent ?

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Q: Suppose a professional basketball player historically makes 39% of his three-point field goals.…

A: In this case, a test is required to see whether three-point goal shooting has improved. Here, the…

Q: A county environmental agency suspects that the fish in a particular polluted lake have elevated…

A: Let μ1 denotes the population mean of sample 1, μ2 denotes the population mean of sample 2. The…

Q: A meteorologist stated that the average temperature during July in Chattanooga was 80 degrees. A…

A: Given  the average temperature during July in Chattanooga was 80 degrees. A sample of July…

Q: It is known that 86% of persons with insomnia also have reported a problem with fatigue. Dr.…

A: The information about associated occurrence of insomnia and problems with fatigue suggests that…

Q: Meteno’s products account for 59% of the U.S. snack chip industry, and there are more than 45,000…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Consider a town with a population that is 10 percent black (and the remainder is white). Because…

A: Consider the given: a) Total cars observed at night = 20%​ of 5000=20100​ × 5000=1000Out of 20 black…

Q: Based on the results, does it appear that men and women may have equal success in challenging calls?

A: Denote p1 is true proportion of male tennis player, who challenged referee calls and p2 is the true…

Q: Fill in tł sing values in the contingency table. Rou

A: We have to calculate the missing expected frequencies for some cells.

Q: Dorinda is in second grade. She asks 6 of her classmates if they like to wear friendship bracelets.…

A: Random Sample should be taken in a way that they must be true representative of population.

Q: Suppose you were going to conduct a survey of visitors to your campus. You want the survey to be as…

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Q: A pharmacist is concerned with recent rise in narcotic prescriptions such as Percocet…

A: Given: Favorable Cases XX = 4141 Sample Size NN = 100100

Q: Suppose that your friend sees the results from question 4 and concludes that heavier drinking causes…

A: Correlation between two variables measure the strength and direction between two variables. It…

Q: You are curious to kno* control. What type of s

A: The sample is a part of the population. The population includes all the units but sample contains…

Q: A calibration study needs to be conducted to see if the readings on 15 test machines are giving…

A: Given : Total Machines = 15 We have to select 5 out 15

Q: Suppose that an examination was hard and most students received extremely low grade on it. This is…

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Q: Are the strengths of Alloy A more consistent than Alloy B?

A: Data   For Alloy  A  88,79,84,89,81,83,82,79,82,85,88,80,85,87,80,78,87,90,83,81  For Alloy B…

Q: A researcher  published this survey result: "74% of people would be willing to spend 10 percent more…

A: Voluntary response sampling: In voluntary response sampling, the respondents select themselves into…

Q: For part a, you did not consider the possibility that the dead batteries being taken out in the…

A: a)

Q: What is the purpose of testing whether ᵝ1=0? If we reject ᵝ1=0, does it imply a good fit?

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Q: If we do not have sufficient evidence to conclude Ha:u, > µ2, then this means that the measures in…

A: In testing of hypothesis, there are always two hypotheses - null and alternative. These two…

Q: This research was conducted with Korean adolescents in the Los Angeles area. Would you be willing to…

A: It is not advisable to generalize the results of the study to Korean adolescents living in other…

Q: When does Counterbalancing will be inappropriate?

A: Counterbalancing may not completely dissipate the order effects in every case. In some cases it…

Q: A student does a survey to see if the average GPAs of male and female undergraduates at her…

A: We have given that  the average GPAs of male and female undergraduates at her university are…

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: (1) Obtain the proportion of Americans over 38 who smoke. The proportion of Americans over 38 who…

Q: it is not D, what is the next best option?

A: Regression: Regression analysis estimates the relationship among variables. That is, it estimates…

Q: A research company is doing research on the number of Americans who have had COVID-19. They need to…

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Q: Assume that the 160 students who take this exam will receive one of 24 grades. i What does the…

A: PIGEONHOLE PRINCIPLE: According to this principle, if n objects are kept in m containers such that…

Q: A new diagnostic test for tuberculosis has a sensitivity of 90% and a specificity of 95%. If applied…

A: Explanation:Here given the population , sensitivity,and specify values  Asking how many false…