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![0.33 .9922 q xo Ndl =2.8,0=0.33), P(X72) = 1-PCX<2) = 1-P(Z < 2-2,5) = 1-P(z<-2.4242) = 1-0.0078 - 0.9922 Answee: A.[6.9922]](http://img.homeworklib.com/questions/1b0c7120-5a17-11ec-9603-4d06a4787d04.png?x-oss-process=image/resize,w_560)
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4. Assume that x has a normal distribution with u = 2.8 and o = 0.33....
Suppose x has a distribution with u = 85 and 6 = 11. (a) If random...
Suppose x has a distribution with u = 85 and 6 = 11. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? Yes, the x distribution is normal with mean = 85 and 0 , = 2.75. • No, the sample size is too small. Yes, the x distribution is normal with mean = 85 and x = 11. Yes, the x distribution is normal with mean...
= X- 4) A normal distribution has mean u = 65 and a population standard deviation...
= X- 4) A normal distribution has mean u = 65 and a population standard deviation o= 20. Find and interpret the z - Score for x = 64. u a) The z - score for x = 64 is 64-65 b) Interpret these results. (Explain): 5) A sample size 28 will be drawn from a population with mean 120 and standard deviation 21. a) Is it appropriate to use the normal distribution to find probabilities for x? yes or...
Suppose x has a distribution with μ = 82 and σ = 9. (a) If random...
Suppose x has a distribution with μ = 82 and σ = 9. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? Yes, the x distribution is normal with mean μx = 82 and σx = 0.6.No, the sample size is too small. Yes, the x distribution is normal with mean μx = 82 and σx = 2.25.Yes, the x distribution is normal with mean μx = 82...
125.9 and o A population of values has a normal distribution with u a random sample...
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
Suppose x has a distribution with μ = 35 and σ = 18. (a) If random...
Suppose x has a distribution with μ = 35 and σ = 18. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? Yes, the x distribution is normal with mean μ x = 35 and σ x = 4.5. No, the sample size is too small. Yes, the x distribution is normal with mean μ x = 35 and σ x = 18. Yes, the x distribution...
Suppose x has a distribution with μ = 32 and σ = 17. (a) If random...
Suppose x has a distribution with μ = 32 and σ = 17. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? No, the sample size is too small. Yes, the x distribution is normal with mean μ x = 32 and σ x = 17. Yes, the x distribution is normal with mean μ x = 32 and σ x = 1.1. Yes, the x distribution...
Let X represent the full length of a certain species of newt. Assume that X has...
Let X represent the full length of a certain species of newt. Assume that X has a normal probability distribution with mean 79.4 inches and standard deviation 7.6 inches. You intend to measure a random sample of n = 11 newts. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. Hz = o =
A population of values has a normal distribution with u = 146.6 and o = 66.3....
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 = 74.6 and o = 31.5....
A population of values has a normal distribution with u = 74.6 and o = 31.5. You intend to draw a random sample of size n = 64. Please show your answers as numbers accurate to 4 decimal places. Find the probability that a single randomly selected value is less than 81.3. PIX < 81.3) = Find the probability that a sample of size n = 64 is randomly selected with a mean less than 81.3. PT < 81.3) =
Suppose x has a distribution with μ=51 and σ=2
Suppose \(x\) has a distribution with \(\mu=51\) and \(σ=2\). (a) If random samples of size \(n=16\) are selected, can we say anything about the \(\bar{X}\) distribution of sample means? Q Yes, the \(\bar{x}\) distribution is nomal with mean \(\mu \bar{x}=61\) and \(\sigma \bar{x}=2\). 0 Yes, the \(\bar{x}\) distribution is normal with mean \(\mu \bar{x}=61\) and \(\sigma \bar{x}=0.1\). 9. No, the sample size is too small. Ye yes, the \(\bar{x}\) distribution is normal with mean \(\mu \bar{x}=61\) and \(\sigma_{x}=0.5\). (b) If...
Suppose x has a distribution with u = 85 and 6 = 11. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? Yes, the x distribution is normal with mean = 85 and 0 , = 2.75. • No, the sample size is too small. Yes, the x distribution is normal with mean = 85 and x = 11. Yes, the x distribution is normal with mean...
= X- 4) A normal distribution has mean u = 65 and a population standard deviation o= 20. Find and interpret the z - Score for x = 64. u a) The z - score for x = 64 is 64-65 b) Interpret these results. (Explain): 5) A sample size 28 will be drawn from a population with mean 120 and standard deviation 21. a) Is it appropriate to use the normal distribution to find probabilities for x? yes or...
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
Let X represent the full length of a certain species of newt. Assume that X has a normal probability distribution with mean 79.4 inches and standard deviation 7.6 inches. You intend to measure a random sample of n = 11 newts. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. Hz = o =
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 = 74.6 and o = 31.5. You intend to draw a random sample of size n = 64. Please show your answers as numbers accurate to 4 decimal places. Find the probability that a single randomly selected value is less than 81.3. PIX < 81.3) = Find the probability that a sample of size n = 64 is randomly selected with a mean less than 81.3. PT < 81.3) =
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