A normally distributed population with unknown variance has a mean of 20. If you took a random sample of size n = 9 from this population and computed a sample standard deviation of 4.1, how likely is it that the sample mean is greater than 24?

Q: what is the sample standard deviation?

A:

Q: At another park, at a random selected time, there were 80 individuals having a picnic. It was found…

A: From the provided information, Sample size (n) = 80 40% of them were fully vaccinated that is p =…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population…

A:

Q: It contains data on brain mass in different species versus glia-neuron ratio, the latter being a…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: From a population with a variance of 900, a sample of 225 items is selected. At 95% confidence, the…

A: Solution-:Given:  The population variance We want to find the margin of error (E) =?

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: A sample of n = 9 scores has SS = 200. What is the variance for this sample?

A:

Q: The sum of the squared deviation scores is SS = 20 for a sample of n = 6 scores. What is the…

A: The variance of the sample can be calculated as:

Q: A sample of n=4 has test scores of 0, 0, 12, 12 What is the range, the variance and the standard…

A: Given information- Sample size, n= 4 Given test scores are- 0, 0, 12, 12 We know that- Range =…

Q: If a set of data is normally distributed with a mean of 20 and a variance of 16, a z-score of -3.8…

A: Let raw score is X.  Then Z Score is given by, Z= (X- mu)/sigma Where mu is mean  And sigma  is…

Q: Assume that you have a binomial experiment with p = 0.4 and a sample size of 120. What is the…

A: Given that, From binomial experiment, Probability, p = 0.4 Sample size, n = 120

Q: The sum of the squared deviation scores, aka the sum of the squares, is SS=60 for a sample of n=5…

A:

Q: A sample has n = 16 scores,  a mean of M = 45 and has an estimated standard error of 4 points (sM  =…

A: Given information is  A sample has n = 16 scores, a mean of M = 45 and has an estimated standard…

Q: If the standard deviation of a variable is 4​, what is the​ variance?   ​(This is a reading…

A: Given information: The standard deviation of the variable is 4.

Q: A sample of n = 9 scores has SS = 72. The variance for this sample is s2 = 9. True or False

A: Given sample of n = 9 scores has SS = 72.

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: It is known that the population variance equals 522. What is the sample size that needs to be taken…

A: It is given that:

Q: There are two samples with means 15 and 17. Both of those samples consist of 24 observations. Sample…

A: Given Data : For Sample 1 x̄1 = 15.0 s1 = 2.0 n1 = 24 For Sample 2…

Q: If random samples, each with n = 16 scores, are selected from a normal population with µ = 100 and σ…

A: Here, the known values are n = 16 scores, µ = 100 and σ = 20.

Q: Find the value of variance in the Binomial distribution where there are 5 samples and p=0.3.

A: The formula of the variance for binomial distribution is,where,n denotes the sample sizep denotes…

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.