Arandom sample of size 32 yielding a sample mean of 75 or more

Q: In what research situation do you use an independent samples t-test?

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Q: what is the sample standard deviation?

A:

Q: What is the p-value for this sample? p-value = 0.2637× (Report answer accurate to 4 decimal places.)

A: The degrees of freedom is, df=n-1=98-1=97c is The degrees of freedom is 97. The test statistic is…

Q: what is the difference between sampling with replacement and without replacement?

A: Sampling with out replacement :  if a sample is drawn from a population and all units in population…

Q: Define random sample. Explain why this is important in design of experiments.

A: A random sample is a sample that is obtained by selecting the sample points randomly without any…

Q: 3. For a given level of significance, if the sample size is increased, the power of the test will…

A: Here, when we take large sample size then z value will be increase. Then we will be reject the null…

Q: Discuss the random sampling and the sampling distribution of the sample average?

A: Simple random sampling: A simple random sample of size n is collected from a large population where…

Q: Estimate the mean of systematic sampling.

A: Answer: Estimation of the mean of systematic sampling:

Q: The required sample size equals:

A: It is given that, H0: μ = 13.50 Vs. H1:  μ>13.50. The sample mean based upon some sample size =…

Q: What is the procedure for determining the sample size necessary to estimate a population mean given…

A: The population mean CI for known population standard deviation is X¯± ( Zα2σn)where X¯=sample mean…

Q: To obtain a smaller margin of error: choose a larger sample size. choose a smaller sample size.

A: The objective is to choose the correct answer for obtaining a smaller margin of error.

Q: How much difference is there between the mean for the treated sample and the mean for the original…

A: Definition Sample Mean x It is the mean of all the values of a sample.   Population μ It is the mean…

Q: What information do you need to decide on a sample size that will provide adequate statistical…

A: Adequate statistical power is the power of probability with the rejected null hypothesis. Generally,…

Q: What are requirements for testing a claim about a population mean with a known?

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Q: For a fixed sample size, what happens to the probability of a Type II error if the significance…

A: The sample size is fixed. The level of significance decreases from 0.05 to 0.01.

Q: What does the sample size (n=) mean for this analysis

A: The Sample size refers to the number of participants or observations included in a study which is…

Q: What sample size should you gather to achieve a 0.7 hour margin of error?

A: here given , population standard deviation  = 4.2 hour  confidence level = 99% MOE  = 0.7

Q: c of a population

A: The sampling variability is a type of variability attributed to sampling.

Q: (a) Classic ANOVA vs GLIM in comparing population means. 1-2pages

A: Mathematically, they may have similar results. But their conceptual usage differs. In case of ANOVA,…

Q: #5 What sample size is needed to give a margin of error of  ±4%  in estimating a population…

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Q: Compute the sample mean and the sample standard deviation.

A: Given: Data: 1.3, 2.8, 2.3, 2.1, 1.5, 1.6, 2.3, 2.7, 2.5, 3.3 N=10 (a) Hypothesis: For cost…

Q: List the sample points for this experiment.

A: The total number of marbles in a box is N=6 Number of selected marbles n= 2 Then total number of…

Q: What test can we use to determine the sample size needed?

A: Confidence intervals for a parameter take the following general form: Point Estimate ± Margin of…

Q: Distinguish between a distribution of sample means and a distribution of sample proportions.

A: Distribution of sample means and sample proportions are obtained.

Q: Which statistical test should she conduct?

A: We need to identify suitable statistical test for given situation

Q: State two differences between a cluster sample and a stratified random sample

A: Stratified Sampling: Stratified sampling is a sampling method, in which the population is divided…

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: Define the sampling distribution of the sample mean for normal population when the variance is…

A: Let the sampling distribution of the sample for normal population when the variance is unknown is…

Q: with paired-samples t test, you will usually compare the sample mean for the difference score to

A: with a pair sample t test we usually compare the sample mean for different score to

Q: Give me an example of systematic sampling and simple random sample

A: Given : Systematic sampling   Simple random sample

Q: What is the difference between a cluster sample and a stratified sampling

A: There are broadly two types of sampling procedures or methods: one is probability and the other is…

Q: 1. What is statistical sampling 2. What is the significance/importance of statistical sampling 3.…

A: We have to define statistical sampling it's importance and also write the disadvantages of using…

Q: With a paired-samples t test, you will usually compare the sample mean for the difference score to…

A: Paired t test: The mean of the same group at different times are compared. That is, sometimes…

Q: What is the value of tobt for the independent samples?

A: The formula of test statistic for two independent samples t test is,

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: what sample size should be used?

A: Given :  Margin of error=E=3%=0.03 Significance level=α=0.05 Since , the estimate of the population…

Q: Which of the following sampling methods does not lead to the samples that can represent population?…

A: Solution Answer. 13) Convience sampling   Because the convenience sampling may not be a random…

Q: A doctor believer simple random sample of significance level of a Day Sunday Frequency 65

A:

Q: What is the importance of getting a sample from a population? When and why is it necessary?

A: The population is defined as a large group in which the units involved have the same…

Q: Give your own example of a statistical study involving parameter and sample. 1. Parameter  2.…

A: We have to give the examples of  a.. Parameters  b.. Statistic

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: Obtain the standard error of difference of sample proportions.

A: ANSWER: For the given data,

Q: What is the p-value for this sample? (Report answer accurate to four decimal places.)

A: mu = 84.3 xbar =94.2 SD = 18.6n = 8

Q: What is the sample standard deviation?

A: To Discuss: What is the sample standard deviation?

Q: Compare and contrast sampling error and standard error with emphasis on the distinction between the…

A: Here we need to compare and contrast sampling error and standard error.

Q: You can reduce the risk of a Type I error by using a larger sample. True or False?

A: Type-I error: Type I error is rejecting the null hypothesis when the null hypothesis is actually…

Q: num sample size required is computer users. major obstacle to getting a good estimate of the…

A: 11. The sample mean is within 11 minutes of the population mean, the standard deviation of the…

Q: Describe the step-by step procedure for statistical testing

A: Hypothesis testing : A statistical hypothesis is a hypothesis that can be tested based on observed…

Q: 4. Population standard deviation: a = 14.5 Sample size: n = 42 Determine the 95% margin of error of…

A: