A sample of n = 9 patients is obtained from a population with μ = 29,...

A sample of n = 9 patients is obtained from a population with μ = 29, and a treatment is administered to the individuals in the sample. After treatment, the sample mean X= 27. SS = 72. Compute one-sample t-value.

Expert Solution

We have

Sample mean,

Variance ,

Standard deviation ,

orchestra answered 1 year ago

A simple random sample of size n = 15 is obtained from a population with μ...

A simple random sample of size n = 15 is obtained from a population with μ = 97 and σ = 23. Enter your answer as an area under the curve with 4 decimal places. P(x⎯⎯⎯ ≤ 94)

A sample of n = 9 scores is obtained from a normal population distribution with σ...

A sample of n = 9 scores is obtained from a normal population distribution with σ = 12. The sample mean is M = 60. a. With a two-tailed test and α = .05, use the sample data to test the hypothesis that the population mean is μ = 65. b. With a two-tailed test and α = .05, use the sample data to test the hypothesis that the population mean is μ = 55. c. In parts (a) and...

Suppose a simple random sample of size n=64 is obtained from a population with μ=76 and...

Suppose a simple random sample of size n=64 is obtained from a population with μ=76 and σ=8. (a) Describe the sampling distribution of x̅ (b) What is P (x̅ > 77.7)? (c) What is P (x̅ ≤ 73.65)? (d) What is P (74.5 < x̅ < 78.15)?

A simple random sample of size n=37 is obtained from a population with μ=65 and σ=15....

A simple random sample of size n=37 is obtained from a population with μ=65 and σ=15. (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of overbarx. (b) Assuming the normal model can be used, determine P(overbar x < 69.4). (c) Assuming the normal model can be used, determine P(overbar x ≥ 66.7).

A simple random sample of size n=64 is obtained from a population with μ=88 and σ=24....

A simple random sample of size n=64 is obtained from a population with μ=88 and σ=24. (a) Describe the sampling distribution of x. is it 1,2,3,4, or 5? 1. The distribution is skewed right. 2. The distribution is approximately normal. 3. The distribution is uniform. 4. The distribution is skewed left. 5. The shape of the distribution is unknown. Find the mean and standard deviation of the sampling distribution of x. Ux= Ox= (b) What is P (x>91.75) ? Round...

26-Suppose a simple random sample of size n=36 is obtained from a population with μ=64 and...

26-Suppose a simple random sample of size n=36 is obtained from a population with μ=64 and σ=15. 1- P(x->65.5) = 2- P(x->c) = 0.72. Find c.= 3- P(64.3<x-<65.65) = 4-P(|z|<c) = 0.45, Find c.= 5-P(|z|>c) = 0.35. Find c.=

A simple random sample of size n=64 is obtained from a population with μ=77 σ=24. (a)...

A simple random sample of size n=64 is obtained from a population with μ=77 σ=24. (a) Describe the sampling distribution of x (b) What is P (x > 80.75)? (c) What is P (x ≤ 70.25)? (d) What is P (74.6<x<83.3)?

A simple random sample of size n=49 is obtained from a population with μ=78 and σ=14....

A simple random sample of size n=49 is obtained from a population with μ=78 and σ=14. (b) What isP (x>81)? (c) What is (P x≤73)? (d) What is P( 76.8 less than x overbar less than 81.2)

Suppose a simple random sample of size n=36 is obtained from a population with μ=81and σ=24....

Suppose a simple random sample of size n=36 is obtained from a population with μ=81and σ=24. (a) Describe the sampling distribution of barx (mean and standad deviation). (b) What is P (barx>85)? (c) What is P (barx≤71)? (d) What P (75.8<barx<90.6)?

1.:The following sample was obtained from a population with μ = 80 and σ = 12....

1.:The following sample was obtained from a population with μ = 80 and σ = 12. Find the z-score corresponding to the sample mean. M = 84 for a sample of n = 36; 2. For a normal population with μ = 70 and σ = 12, find the following. (a) What is the probability of obtaining a sample mean greater than 73 for a sample of n = 36 scores? (b) What is the probability of obtaining a sample...

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