For a population with a standard deviation of 40, how large a sample is necessary to have a standard error that is at most 5 points?

Q: For a normally distributed population with a mean of 40 and a standard deviation of 5 find P(38 < X…

A: Given Information: Required : To find P(38 &lt; X &lt; 41) Z-score is a measure which indicates…

Q: A population has a standard deviation of 25 and a mean of 300. Given a random sample of size 100,…

A:

Q: o=58. From sample sizes of 36 adults find the proportion of sample means having values of at least…

A: here , sample size  = 36 population  mean = 162 population standard deviation = 58

Q: A variable is normally distributed with a hypothesized population mean of 53 and a standard…

A:

Q: An analysis of a data set (N = 16) has revealed that its standard deviation (SD) of 2. Then, what is…

A: GivenN=16standard deviation(SD)=2

Q: opulation with a standard deviation of 40, how large a sample is necessary to have a standard error…

A: The standard error can be calculated as: SE=σn Here, σ = Standard deviation n = Sample size Thus,…

Q: The students in a certain high school have an average height of 160 cm with a standard deviation of…

A: Given : Sample size = n = 50 standard deviation = σ = 12

Q: For a normally distributed population with a mean of 40 and a standard deviation of 5 find P(38 < X…

A: Here given that a normally distributed population with a mean of 40 and a standard deviation of 5.…

Q: A random sample of size, n=20 has the mean 20 and standard deviation 5. What is the coefficeint of…

A: Given Information: Sample size (n) = 20 Sample mean (x¯) = 20 Sample standard deviation (s) = 5 To…

Q: The president of a university wants to use the mean of a ma to estimate the average amount of time…

A: Given information Standard deviation σ = 1.40 Confidence interval = 0.99 Significance level(α) = 1-…

Q: the population standard deviation is 15, how large a sample is necessary to have a standard error…

A: Given  Population standard deviations σ=15, standard error=se&gt;8

Q: A variable is normally distributed with a hypothesized population mean of 20 and a standard…

A: It is given that the mean of the normal distribution is 20 and standard deviation is 4.

Q: A random variable Y has normal distribution with a mean of 80 and a standard deviation of 15.  What…

A: Mean()=80Standard deviation()=15

Q: What is the standard error of the mean for a sample that has n=53 people and comes from a population…

A: It is given that n = 53s = 11

Q: For any quantitative population with a finite variance, the proportion of data points less than 2…

A: Given :- For any quantitative population with a finite variance, the proportion of data points less…

Q: it is known that the population standard deviation of weight among females is 30. assuming that we…

A: The standard error of the average weight among women of a sample of this size is obtained below:…

Q: Find the standard error of the sample mean such that we have 50 random samples with mean 30 and…

A: Number of random samples,  Mean=30 Standard deviation,

Q: A population has a mean of 82.4, and a standard deviation of 14. Assume that a sampling distribution…

A: Given information Mean µ = 82.4 Standard deviation σ = 14 Sample size (n) = 400

Q: A normal distribution has a mean of 100 and a standard deviation of 2. If 69,146% of the data are…

A:

Q: A population is known to be normally distributed with standard deviation known to be 6.9. In order…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: In a certain population, body weights are normally distributed with a mean of 152 pounds and a…

A: The number of people surveyed is 1271 and it is obtained below: Let us define the random variable X…

Q: a random sample is selected from a population with a standard deviation of  56. On average, how much…

A:

Q: A population has a standard deviation of 18 on average how much difference should exist for a random…

A: From the provided information, Population standard deviation (σ) = 18 Sample size (n) = 36

Q: A sample of n=25 scores has a mean of 68. Find the z-score for this sample:   If it was obtained…

A:

Q: large population of 5,000 students take a practice test to prepare for a standardized test. The…

A: Population mean, Population standard deviation,

Q: A large population of 5,000 students take a practice test to prepare for a standardized test. The…

A: From the provided information, the population mean (µ) is 140 and the standard deviation (σ) is 80.…

Q: A population has a standard deviation of 18 on average how much difference should exist for a random…

A: A population has a standard deviation of 18.

Q: 32 individuals from a population and the mean of the population is 120 and the standard deviation of…

A: From the central limit theorem the sample mean blood glucose level will follow normal distribution…

Q: An SRS of size 10 is drawn from a population that has a normal distribution. The sample has a mean…

A: Define a random variable X, is the variable of interest.