when we are performing a hypothesis testing for a population mean, if the sample size is small, what will be th test statistic used? O a. f-statistic O b. Chi-square statistic Oczstatistic O d. t-statistic O e q-statistic

Q: When sample averages are _____________and the differencebetween them is _______________ , we can say…

A: Statistical test are used to calculate the test statistic and using this test statistic, the…

Q: a. What is the standard error of the mean in men? What is it in women? Assume that the sampling was…

A: n1 = 4620 n2 = 6228 x1 = 3.8 x2 = 2.4 s1 = 6.7 s2 = 4.6

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Q: When comparing two population mean, failing to reject H, means that the two population means are…

A: It is given that H0 is not rejected.

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Q: Calculate value of (t) if: first sample mean = 85, second sample mean = 91, and o x1-x2 =

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Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: If the P-value is 0.003 and the level of significance , , is 0.05 in a hypothesis test for a mean,…

A: Given,p-value =0.003and  level of significance(α)=0.05

Q: Explain the basic idea for performing a hypothesis test, based on independent samples, to compare…

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Q: A significance level for a hypothesis test is given as ∝ = .05. Interpret this value

A:

Q: the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the CincinnatiEnquirer,…

A: a.

Q: Two sets of sample data, A and B, are given. Without doing any calculations, indicate in which set…

A: INTRODUCTION :  BOX PLOT TECHNIQUE   In the Box plot technique, the Five number summary is used…

Q: We have provided a sample mean, sample size, and population standard deviation. In each case, use…

A: It is given that the sample mean is 21, the sample size is 32 and the population standard deviation…

Q: If the size of a sample is 64 and standard error of mean is 1.5.What should be the sample if…

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Q: A statement that is accepted if the sample data provide sufficient evidence that the null hypothesis…

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Q: What are the three t tests for population means?

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Q: 9. If the population proportion is 0.6. A researcher wants the margin of error to be 0.20. and level…

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Q: The objective of statistical inference is to: a. Draw conclusions about population parameters from…

A: We need to answer, the objective of statistical inference is to: a. Draw conclusions about…

Q: fire insurance company thought that the mean distance from a home to the nearest fire department in…

A: The provided sample mean is Xˉ=4.8\bar X = 4.8 and the known population standard deviation is…

Q: What is the Sample Distribution of means and why is it called a "special Kind of Population"?

A: We have to know about sampling distribution of sample means.We need to understand it in brief.

Q: the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the CincinnatiEnquirer,…

A: From provided information, the unemployment rate for 18- to 34-year-olds was reported to be 10.8%.…

Q: 2. The principal of a high school wants to know how long his students spend doing homework at night…

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Q: A professor is curious about the IQ of students at the Mindanao State University. The entire group…

A: We tell the entire group students is an example of a  Note: According to bartleby experts question…

Q: There are three possible alternative hypotheses in a hypothesis test for a population mean. Identify…

A: There are three possible alternative hypotheses. Let µ be the population mean and c be the value to…

Q: (b) If the mean of a random variable X is 40, what will be the mean of the sampling distribution of…

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Q: A fire insurance company thought that the mean distance from a home to the nearest fire department…

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Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: Suppose that you know that a variable is normally distributed on each of two populations. Further…

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A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: The sample suggests that the food is safe, but it actually is not safe. type I O type II O not an…

A: Type I error (α) is the probability of rejecting the null hypothesis when it is actually true. Type…

Q: Decide if the following statement are true or false.  If the statement is false, please correct it.…

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Q: Takes data from a sample and makes inferences (i.e., draw conclusions, make predictions, make…

A: Inferential statistics: It is the procedure whereby inferences (draw conclusion, make predictions,…

Q: As we have seen in class, hypothesis testing, and confidence intervals are the most common…

A: Given.... As we have seen in class, hypothesis testing, and confidence intervals are the most common…

Q: Provide a scenario for which you would use an independent sample t test. Also, explain in your own…

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Q: What is a sampling distribution of means and what does the standard error of the mean (STEM)…

A: Here we explain the sampling distribution for mean.

Q: If the sample size is n = 2 and the population variance is o =7.75, what is the variance of the…

A: NOTE-AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION ONLY

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A: a) Statistic: The statistical measure that describes the features of the sample that is taken from…

Q: Suppose you intend to conduct a hypothesis test on the difference in population means. In…

A: The sample of couples with children sample 1 sample size is 39, sample mean is 51.1, and sample…

Q: We have provided a sample mean, sample size, and population standard deviation. In each case, use…

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Q: (a) Suppose that you would like to know if there is evidence that the mean time spent checking work…

A: The sample mean is 4.1. The sample size is 1004. The sample standard deviation is 1.4. We have to…

Q: If nothing else changed besides an increase in sample size, the p-value in a two sided test would be…

A: an increase in sample size, the p-value in a two sided test would be smaller.

Q: It is claimed that the mean household size in the River Terrace neighbourhood is 3.5 persons. A…

A: Test is that whether the mean household size in the River Terrace neighbourhood is 3.5.

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A: Assumptions: The assumptions that must be satisfied to ensure that the results are valid, are: The…

Q: If you want to construct a 90% confident interval for a population mean such that it is within a…

A: The confidence interval for the mean is given by :    CI = x¯ ± zα2 ×σn x¯ : sample mean σ :…

Q: Compute the mean, variance, and standard error of the sampling distribution of the sample means…

A:

Q: The hypotheses, Null and Alternative, are basically statements about which of the following? * O…

A: The null hypothesis is the statement about the population parameter. We always test the population…

Q: The process of using sample statistics to make conclusions about population parameters is called…

A: In statistics, the population consists of the entire set of entities that are under study, whereas a…