A population of values has a normal distribution with μ=76.2μ=76.2 and σ=62.5σ=62.5. You intend to draw a random sample of size n=106n=106. Find P70, which is the score separating the bottom 70% scores from the top 30% scores. P70 (for single values) =  Find P70, which is the mean separating the bottom 70% means from the top 30% means. P70 (for sample means) =  Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

A population of values has a normal distribution with μ=185.7μ=185.7 and σ=57.5σ=57.5. You intend to draw a random sample of size n=57n=57.Find P25, which is the score separating the bottom 25% scores from the top 75% scores.P25 (for single values) = Find P25, which is the mean separating the bottom 25% means from the top 75% means.P25 (for sample means) =

A population of values has a normal distribution with μ=156.6μ=156.6 and σ=38.9σ=38.9. You intend to draw a random sample of size n=94n=94.Find the probability that a single randomly selected value is less than 147.8.P(X < 147.8) = Find the probability that a sample of size n=94n=94 is randomly selected with a mean less than 147.8.P(M < 147.8) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

A population of values has a normal distribution with M=153.9 and O=82.9 You intend to draw a random sample of size n=115. A). Find P86, which is the score separating the bottom 86% scores from the top 14% scores. P86 (for single values) =__________ B). Find P86, which is the mean separating the bottom 86% means from the top 14% means. P86 (for sample means) =_________

A population of values has a normal distribution with μ=67.9μ=67.9 and σ=44.8σ=44.8. You intend to draw a random sample of size n=17n=17.Find the probability that a single randomly selected value is greater than 94

A population of values has a normal distribution with μ=116.3μ=116.3 and σ=27.5σ=27.5. You intend to draw a random sample of size n=249n=249.Find the probability that a single randomly selected value is greater than 117.3.P(X > 117.3) = Find the probability that a sample of size n=249n=249 is randomly selected with a mean greater than 117.3.P(¯xx¯ > 117.3) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

A normal distribution has a mean of µ = 50 with σ = 30. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 50 and X = 80?​ Select one: a. 0.6826 b. 0.3413 c. 0.8413 d. 0.1587

Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 48 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that σ = 8.00 ml/kg for the distribution of blood plasma. When finding an 99% confidence interval, what is the critical value for confidence level? (Give your answer to two decimal places.) Z=0.005 (a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error? (Round your answers to two decimal places.) lower limit upper limit margin of error (b) What conditions are necessary for your calculations? (Select all that apply.) the distribution of volumes is normal ✔ is known o is unknown the distribution of volumes is…

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.6 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 14 samples is 4.9 ppm with a variance of 1.2 Does the data support the claim at the 0.01 level? Assume the population distribution is approximately normal. Step 2 of 5 :   Find the value of the test statistic. Round your answer to three decimal places.

A population of values has a normal distribution with μ=73.1μ=73.1 and σ=28.1σ=28.1. You intend to draw a random sample of size n=131n=131.Find the probability that a single randomly selected value is greater than 69.7.P(X > 69.7) = Find the probability that a sample of size n=131n=131 is randomly selected with a mean greater than 69.7.P(M > 69.7) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.