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what is the lowest valeu of the sample mean in this sampling distribution
A population consists of 4 number 3, 7, 11, 15 of sample size n=2 which can be drawn without replacement from the population.
a. Population mean
b. Population variance
c.population standard deviation
d. Mean of the sampling distribution of the sample means
e. Variance of the sampling distribution of the sample means
f. Standard deviation of the sampling distribution of the sample means
A population consists of the numbers 2, 4, 5, 9, and 10. A random sample of size 2 is
taken from the population.
1. Compute the number of samples using combination.
2. Complete the table on the right and compute the mean µ, variance
σ2 and standard deviation σ of the population.
3. Complete the table on the right and compute
the mean μx̄, variance σx̄2
, and standard
deviation σx̄ of the sampling distribution of
sample means.
A population of size N=150 has u=8 and standard deviation of o=5.4. What is the probability that a random sample of size n=20 will have a mean of 9.5 above.
a meeting of envoys was attended by 4 americans and 5 filipinos. If 6 envoys were selected at random one after the other, determine the values of the random variable F representing the number of filipinos
three balls are drawn in succession without replacement from a jar containing 8 white balls and 5 black balls. Let B be the random variable representing number of black balls
The heights of the population of boys are normally distributed with a mean of 66 inches and a
standard deviation of 8.9 inches. If a random sample of 40 boys is drawn from this population,
the barangay captain wants to conduct a study to estimate average playing time of children ages 7 to 12 he wants to be 99% confident that the sample mean will be within 15 minutes of the true mean. If he can approximate a population standard deviation by 40 minutes and assume an approximately normal distribution, how large a sample should he get?
the aptitude test was administered to random sample of 120 shs students. the sample mean was 104.2 with standard deviation of 12. find 99%confidence interval
2. A random sample of n=25 measurements is selected from a population with mean μ = 3 and standard deviation = 1. What is the probability that
a. The sample mean is greater than or equal to 3.1?
b. The sample mean is greater to 2.8, but less than or equal to3.2?
