A hypergeometric distribution has a mean of 7.5, when the sample size is 15 and the...

A hypergeometric distribution has a mean of 7.5, when the sample size is 15 and the population is 50.

Determine the standard deviation for the distribution.

Expert Solution

orchestra answered 2 years ago

X has a distribution with mean = 70 and standard deviation = 20. The sample size...

X has a distribution with mean = 70 and standard deviation = 20. The sample size is 16. Find P(66 < or equal to x bar < or equal to 71)

Given a binomial distribution with a sample of size 15 trees and the probability of damage...

Given a binomial distribution with a sample of size 15 trees and the probability of damage by fungi of 0.10, find a. P(# damaged trees = 3) = b. P(# of damaged trees is less than 3) = c. P( at least 3 but no more than 6 damaged trees are found)= d. the population mean e. population variance

A sample size of 120 had a sample mean and standard deviation of 100 and 15...

A sample size of 120 had a sample mean and standard deviation of 100 and 15 respectively. Of these 120 data values, 3 were less than 70, 18 were between 70 and 85, 30 between 85 and 100, 35 between 100 and 115, 32 were between 115 and 130 and 2 were greater than 130. Test the hypothesis that the sample distribution was normal.

A sample of size 105 will be drawn from a population with mean 15 and standard...

A sample of size 105 will be drawn from a population with mean 15 and standard deviation 6 Use the Cumulative Normal Distribution Table if needed. 1) Find the probability that mean x will be greater than 16. Round the final answer to at least four decimal places. 2)Find the 55th percentile of x. Round the answer to at least two decimal places.

Suppose a sample has a sample mean of 53, a sample size of 40, and the...

Suppose a sample has a sample mean of 53, a sample size of 40, and the population has a standard deviation of 4. We want to calculate a 99% confidence interval for the population mean. The critical Z* in this case is 2.576. The confidence interval is (to one decimal place), a. (42.7, 63.3) b. (48.8, 57.2) c. (49, 57) d. (51.4, 54.6) e. (52.4, 53.6) f. (52.7, 53.3)

The purpose of this is to demonstrate the sampling distribution of the sample mean when the...

The purpose of this is to demonstrate the sampling distribution of the sample mean when the data is generated from an exponential distribution (at rate 2.0) as sample size increases. Describe and compare the sampling distributions of the sample mean for sample sizes n=5, n=20, n=40. Do this by simulating samples at least 5000 times. R-code for generating a sample of size n=10 from exponential distribution at rate 2.0 is >rexp(n=10, rate=2.0)

Sample A has a sample size of 12, a mean of 70, and a variance of...

Sample A has a sample size of 12, a mean of 70, and a variance of 160. Sample B has a sample size of 15, a mean of 75, and a variance of 180. Using a two-tail test with p < .05 significance, is there a difference between the means of the two samples? Group of answer choices Yes, Sample B has higher outcome scores than Sample A, t(25) = -0.987, p < .05. Yes, Sample B has higher outcome...

A sample of size n = 16 is made from a normal distribution with mean μ....

A sample of size n = 16 is made from a normal distribution with mean μ. It turns out that the sample mean is x = 23 and the sample standard deviation is s = 6. Construct a 90% confidence interval for μ.

Assuming the population has an approximate normal distribution, if a sample size n=10 has a sample...

Assuming the population has an approximate normal distribution, if a sample size n=10 has a sample mean ¯x=36 with a sample standard deviation s=9, find the margin of error at a 90% confidence level. THEN YOU MUST ROUND ANSWER TO TWO DECIMALS PLACES.

Determine the missing frequency in the following frequency distribution, when it is known that arithmetic mean = 11.0917 and total sample size N = 60?

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