Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o = 16.6. Assume the population is normally distributed.

Q: The pulse rates of 153 randomly selected adult males vary from a low of 37 bpm to a high of 101 bpm.…

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Q: 15.3. You intend to draw a random sample of size n = 37. Please answer the following questions, and…

A: Given a Population of values has a normal distribution with μ=117.9 and σ=75.3. And random sample…

Q: Find the standardized test statistic, z, to test the hypothesis that p, < p2. Use a = 0.10. The…

A: Given that, This is the left tailed test .

Q: Suppose the average amount of apples per tree in a large orchard is 600 pounds with a standard…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: Find the raw score for 99% with a population mean of 29 and σ of 4

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Q: For the following situation, find the mean and standard deviation of the population. List all…

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Q: Using the given margin of​ error, confidence​ level, and likely range for the observed value of the…

A: Obtain the sample size. The sample size is obtained below as follows: The formula of sample size is,

Q: Use technology to help you test the claim about the population mean, u, at the given level of…

A: The random variable X follows normal distribution. It is given that, the population standard…

Q: Determine the minimum sample size required when you want to be ​95% confident that the sample mean…

A: We have confidence level = 95%  sample mean is within one unit of the population mean i. e margin of…

Q: A. we need to account for the degrees of freedom B. it's easier than the Z interval approach C.…

A: T interval is used as alternative method for estimating the interval for sample mean.

Q: The director of research and development testing and new drugs she wants to know if there's evidence…

A: Test statistic:Denote μ as the claimed mean; μ = 384. In a random sample of n = 79, the sample mean…

Q: Assume that the population proportion is .55. Compute the standard error of the proportion, sp, for…

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Q: The claim is that weights (grams) of pennies made after 1983 have a mean equal to 2.500 g as…

A: Answer - The claim is that weights of pennies made after 1983 have a mean equal to 2.5 g…

Q: Unfortunately, arsenic occurs naturally in some ground watert. A mean arsenic level of u8.0 parts…

A: a)   Denote μ as the average arsenic level.

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A: From the provided information, Population standard deviation (σ) = 30 lb Confidence level = 90%…

Q: statistics. Assume the population is normally distributed on mean p at the given level of…

A: Here given. μ=51,700​; α=0.10    Sample​ statistics: Sample mean =50348 Sample standard  deviation…

Q: 16. Test the claim about the population mean μ at the level of significance a. Assume the population…

A: The question is hypo. testing Given : Popl. std. deviation ( σ ) = 1.2 Sample size ( n ) = 50 Sample…

Q: Use technology to help you test the claim about the population mean, u, at the given level of…

A: Solution: The given claim is µ≤1250. From the given information, n=300, x-bar=1266 and σ=202.48.

Q: Calculate the standardized test statistic. The standardized test statistic is (Round to two decimal…

A: The summary of statistics is, x¯=1308.11,σ=196.31,n=200,μ=1280

Q: The Empirical Rule for Normal Distributions states: -68% of data 95% of data- 99.7% of data- -3 -2…

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Q: Determine whether the given conditions justify testing a claim about a population mean μ The sample…

A: Given sample size is n=17, σ = 4.33 the original population is  normally distributed.

Q: 5. If a sample of n = 86 students were taken randomly from the school, describe the distribution of…

A: Suppose it is known that the proportion of students at a local high school that take publictransit…

Q: Find the p-value for the problem, assume the population is normally distributed. Show all steps for…

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Q: Test whether u, <2 at the a = 0.02 level of significance for the sample data shown in the…

A: Introduction: Denote μ1, μ2 as the true population means for Population 1 and Population 2,…

Q: Biologists studying horseshoe crabs want to estimate the percent of crabs in a certain area that are…

A: The one sample z-confidence interval for the population proportion is given as follows:

Q: Use technology to help you test the claim about the population​ mean, μ​, at the given level of​…

A: Solution: Given information: n= 300 sample size x= 1311.02 Sample mean μ=1280 Population mean σ=…

Q: If  =p0.5  and the distribution of  p  is approximately normal, then the sample size must be at…

A: Given:p = 0.5 The sampling distribution of the sample proportion 𝑝̂ is approximately normal when np…

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

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Q: Find the proportion of Normally distributed observations with a z-score below 0.82. Give your answer…

A: From the provided information, The z score is below 0.82.

Q: Use technology to help you test the claim about the population mean, p, at the given level of…

A: The summary of statistics is, x¯=1308.11,σ=196.31,n=200,μ=1280 The null and alternative hypothesis…

Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.