Under what circumstances will the distribution of sample means be normal? O Only if the population...
In SPC, the distribution of “sample means” Cannot be approximated by normal distribution. Will have greater variability than the process distribution. Will have a mean greater than the process distribution as a function of the sample size. Is exactly like the original distribution under all circumstances. None of the above is true.
If I has a normal distribution, then 7 always has a normal distribution. True False Under what condition does the sample mean ī not have a normal distribution? Population is not normal but the sample size n > 30. Population is not normal and sample size n <30. Population is normal. The Central Limit Theorem for a sample mean (@) is very important in Statistics because it states that for large sample sizes, the population distribution is approximately normal. for...
125.9 and o A population of values has a normal distribution with u a random sample of size n = 65. 19.8. You intend to draw What is the mean of the distribution of sample means? H = What is the standard deviation of the distribution of sample means (i.e. the standard error)? (Report answer accurate to 2 decimal places.) 0 = > Next Question
The Central Limit Theorem states that for a population with any distribution, the distribution of sample means approaches a normal distribution with mean u and standard devition: σ/√?? always. σ as sample size increases σ always σ/√?? as sample size incrases
A population of values has a normal distribution with = 247.7 and o = 98.6. You intend to draw a random sample of size n = 79. What is the mean of the distribution of sample means? Hi What is the standard deviation of the distribution of sample mean? 0 =
A population of values has a normal distribution with p - 102 and o - 97.5. You intend to draw a random sample of size n - 215. What is the mean of the distribution of sample means? (Enter your answer as a number accurate to 4 decimal places.) What is the standard deviation of the distribution of sample means? (Report answer accurate to 4 decimal places.) 0 =
A population of values has a normal distribution with u = 146.6 and o = 66.3. You intend to draw a random sample of size n = 186. Please show your answers as numbers accurate to 4 decimal places. Find the probability that a single randomly selected value is greater than 152.4. PIX > 152.4) = Find the probability that a sample of size n = 186 is randomly selected with a mean greater than 152.4. Plı > 152.4) =
A population of values has a normal distribution with u = a random sample of size n = 16. 229.4 and o = 67.4. You intend to draw Find the probability that a single randomly selected value is greater than 212.6. P(X > 212.6) = Find the probability that a sample of size n = 16 is randomly selected with a mean greater than 212.6. P(M> 212.6) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained...
A population of values has a normal distribution with y = 126.4 and o = 88.2. You intend to draw a random sample of size n = 84. What is the mean of the distribution of sample means? (Round your answer to 2 places after the decimal point, if necessary.) What is the standard deviation of the distribution of sample means? (Round your answer to 2 places after the decimal point, if necessary.)
Choose the incorrect statement(s). (Check all that apply) A distribution of sample means may not be normally distributed. D A sampling distribution always has a bigger standard deviation than that of it's corresponding population sample means are approximately normally distributed when n 30. The standard deviation of a sampling distribution of means is the standard deviation of the or ginal population divided by n (the sample size).