A university official wishes to determine whether the format of instruction is related to the students’ opinion of the quality of instruction received.  A sample of students’ evaluations of three formats of instruction are shown here.      Format of Instruction  Rating Onground Hybrid Online Excellent 100 120 130 Average 150 260 180 Poor 120 50 140   What is the probability of a randomly selected person reported an average rating OR reported about onground instruction?

Q: ording to the Bureau of Labor Statistics (BLS), the median weekly earnings for men in the sales and…

A: Given data :  $627, $617, $732, $735, $639, $569, $494, $566, $648, $767, $683, $604, $727, $896,…

Q: Describe the differences between a probability sample and a nonprobability sample

A: Introduction: A probability sample involves the use of probabilistic concepts to collect the sample,…

Q: According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their…

A: Introduction: The sample mean is an unbiased estimator of the population mean, and the sample…

Q: According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their…

A: The number of observations n is 12.

Q: The owner of Maumee Motors wants to study the relationship between the age of a car and its selling…

A: Given that

Q: find the mean, variance, and standard deviation   Twenty-one percent of U.S. employees who are late…

A: The value of mean is 0.84, which is obtained as follows:

Q: A company executive claims that employees in his industry get 100 junk emails per day. To further…

A: Given Information: Consider the given dataset: 125, 101, 109, 94, 122, 92, 119, 90, 118, 122. The…

Q: A magazine article reported on Springfield School District's magnet school programs. The article…

A:

Q: What does Common outcomes signify in statistics.

A: In statistics, outcomes are defined as the result of an event. An outcome of an event can be unique…

Q: The LA county board of education regularly collects data on student SAT scores and classifies these…

A: Multple Regression analysis is the corret answer because SAT score is dependent on two or more…

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: A study on the habit of following news from community groups, employees, traders, and students, by…

A: We have given that Random sample size (n)=305 And two groups media and community groups  We have to…

Q: The college placement office is developing a model to relate grade point average (GPA) to starting…

A: The question is about correlation.Given :To find :Test whether there a linear relationship between…

Q: The owner of Maumee Ford-Mercury-Volvo wants to study the relationship between the age of a car and…

A: CarAge (Years)Selling Price…

Q: In the US, 45.4% of all people have type O blood, 39% have type A blood, 11.9% have type B blood and…

A:

Q: Determine which of the following options best describes the main purpose for using Figure 2. O…

A: Given :  We have given a box plot which useful to find five number summary and check whether the…

Q: please help: A case-control study was conducted to assess the association between exposure to…

A: Given that: Total number of cases in a sample = 55 Total number of controls = 2820 Number of exposed…

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: FOR ANY QUERIES, PING ME     HAPPY LEARNING

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: To find the percentage of females among the respondents, we need to calculate the ratio of the…

Q: Records from the Washington Department of Licensing show that 47 former SFCC business students have…

A: Formula : Mean = x̄ = Σx/n

Q: a. Complete the table by filling in the expected frequencies. Round to the nearest whole number:…

A: Test is that whether the distribution of blood type is different for millionaires.

Q: A researcher wants to study whether there is a relationship between personality type and the type of…

A: The given data is,     Types of class   Total     In-person Online   Personality type…

Q: a. What is hypothesis testing in statistics? Discuss b. Does Type I error being considered more…

A: We have some basic questions regarding hypothesis testing and we have to answer them.

Q: Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people…

A: Cell-only sample Landline sample Democrat or lean Democratic 49 47 Refuse to lean either way…

Q: A professor wants to know which type of instructional mode students had more satisfaction.  The…

A: Given : Online(1) Hybrid(2) Face to Face(3) 3 1 2 3 3 2 4 1 2 3 3 1 3 2 3

Q: The CEO of a small company earns $400,000 per year, and the 10 employees each earn $50,000 per year.…

A: Here, the CEO of a small company earns $400,000 per year, and the 10 employees each earn $50,000 per…

Q: Four scenarios of statistical studies are given below. Decide which study uses a population…

A:

Q: If a researcher failed to use a random sample, how would this affect the research conclusion?   If…

A: Any test criteria's basic assumption is to select a sample that is random. A random sample would be…

Q: The Interpersonal Reactivity Index is a survey designed to assess four different types of empathy.…

A: Given information: Males Females 13 22 20 20 12 26 16 25 13 28 26 24 21 16 23 19…

Q: the distribution of sample means consists of the

A:

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (gr to 12).…

A: Opinion Female Male Total Almost no chance 139 86 225 Some chance but probably not 156 189 345…

Q: The expected relative frequency of a particular outcome is?

A: The relative frequency is the ratio of the number of times a particular value of the data occurs to…

Q: Dr. Summit wants to compare the ability to recall events between older adults and younger adults.…

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Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.