A population of values has a normal distribution with μ = 162.1 and o = 91.6. You intend to draw a random sample of size n = 55. Please answer the following questions, and show your answers to 1 decimal place. Find the value separating the bottom 40% values from the top 60% values. Find the sample mean separating the bottom 40% sample means from the top 60% sample means.

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Q: Iculate the mean and median and report the lower value of two.

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Q: ? a. z = 0.91 b. z = -0.91 c. z = 0.43 d. z = -0.43

A: Solution

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Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

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Q: The weights of students in a certain school are normally distributed with a mean weight of 66 kg.…

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A: xbar = 120.07 mu = 120

Q: 16. Provide evidence that the sample proportion follows a normal distribution.

A: Given information: n = 125  p = 0.58  po = 0.65