At 5% level, is the economist claim true? Assume the variance are equal.

Q: 6. You are doing a research project in political science to determine the proportion of voters in…

A:

Q: Explain what happens when finding the margin of error if all stays the same except the sample size…

A: Solution: The margin of error can be calculated by using the formula:

Q: Explain the intuition for why smaller samples are more likely to have extreme averages

A: Average is given as = sum of observation/number of observation Where number of observation is n (…

Q: A company that sponsors LSAT prep courses would like to be able to claim that their courses improve…

A: Given μd=3 n=8 d= Post-test-Initial-test  α=0.01Find p-value

Q: Make 1 real-life problem with a solution in any of the following topics;

A: Hypothesis testing for one sample proportion is large sample hypothesis test for binomial…

Q: please answer correctly ASAP by confirming my answer  don't miss any answers out.

A:

Q: How Easily are You Influenced? Mentally simulate ten tosses of a coin by writing down a sequence of…

A: Wording bias or question-wording bias will  happens in a survey when the wording of a question…

Q: A random sample of 150 people was taken from a very large population. About 100 of the people in the…

A: According to the given information,Sample size, n = 150Number of successes in the sample, x =…

Q: While estimating from a sample, you should always try to get a biased B,. Is this correct? O Yes O…

A:

Q: You are a web designer process engineer for a company that sells jewelry online. You know that 30.5%…

A:

Q: 26. If the random variable X~ \(,0²), then what is the median of X?

A: Let X denotes the random variableX~Normal (μ, σ2)To find median of X Formula UsedWhere M denotes…

Q: Jump to level 1 An auto maker is interested in information about how long transmissions last. A…

A: We want to find  p value, t value,df and n and s.

Q: 2. What should you do if the p-value is low?

A: We know that, a P-value is a statistical measurement used to validate a hypothesis against observed…

Q: SAT Math Suppose that scores on the SAT Math test are approximately normal with a mean of 500 and a…

A:

Q: kindly write legibly thank you! Enumerate and explain each briefly at least FOUR (4) Examples of…

A: We have to explain  Examples of Application of Statistics in Enginnering problem :

Q: (b) 120° r = 3. 66

A:

Q: You like to eat tuna sandwiches. Recently you have noticed that there does not seem to be as much…

A:

Q: The sample mean of a dataset is 3.8 from 13 observations, calculate the sum of observations.

A: From the provided information, Mean of dataset (x̅) = 3.8 Number of observations (n) = 13

Q: Determine u and o, from the given parameters of the population and sample size. H= 69, o = 6, n= 38

A:

Q: 12. The news release referenced in the previous exercise also included data from independent samples…

A: The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 < p2. Test…

Q: true proportion of voters in favor of a referendum is unknown period a random sample of 200 voters…

A: Formula : Point estimate = p̂= x/n

Q: 3 4.6 Homework-Optimization WA 4.6 Homework-Optimization -X W 4.5 Homework-Indet Forms - MX -> -> O…

A:

Q: If the warehouse receives 450,000 labels from supplier, using the square root method, at least how…

A: Given that the warehouse receives 450,000 labels from supplier.

Q: The United States has an aging infrastructure as witnessed by several recent disasters, including…

A: Given data…

Q: A large city is interested in annexing part of the surrounding county. The city counsel believes…

A: we have given that  sample size N1=162 ,favorable cases X1=102 and sample size N2=264 ,favorable…

Q: The issue/scenario: A bio-tech firm has provided you with 1 years’ worth of sales for a sample of 45…

A: From the given information, there are two groups in Engineer category, 'No' and 'Yes'. The…

Q: 3. (CLO 2) Test a claim that the mean height of your population is different from 64 inches. Use the…

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

Q: Refer to the given situation below where you can apply hypothesis testing and also answer the…

A: Given, scientists have revealed that people damaged up to 97% of the Earth's surface ecology.

Q: A poll of 520 citizens of Normal, Illinois showed that 59% favored strict enforcement of speed…

A: A poll of 520 citizens of Normal Illinois showed that 59% favored strict enforcement of speed…

Q: why do we study or use 5 averages in statistics? Elaborate

A: The 5 types of averages we use in statistics are: 1- Arithmetic mean 2-Mode 3- Median 4-Root mean…

Q: In a certain jurisdiction, all students in Grade Three are required to take a standardized test to…

A: In the given situation, X variable is perbelowpoverty. Y variable is labeled mathscore. From the…

Q: When estimating the proportion of Ole Miss students that support moving the Confederate statue, how…

A:

Q: Define most powerful test.

A: Define most powerful test

Q: Name two limitations of this test.

A: Chi Square Test The Chi-square test is a non-parametric type that does not have distribution and is…

Q: enchmark Assessment - 9/39 A burrito was cut into 6 equal pieces. If Carmen ate of the burrito, and…

A: The objective is to determine how many whole pieces of the burrito are left

Q: I know that the answer to the question is  +2.23. I am struggling to remember the steps to get to…

A: Defines that p is true proportion of all students, who have a part-time job.

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: Find the point estimate of p and 96% CI.

A: Given: X: Number of students responded as Yes = 32 n: Total number of students = 100