A population of values has a normal distribution with �=51.8 and �=56.5. A random sample of size �=199 is drawn. What is the mean of the distribution of sample means?��¯= Incorrect What is the standard deviation of the distribution of sample means? Round your answer to two decimal places.��¯=

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A: Consider that the middle 50% of the distribution for x the bounds of which form the distance…

Q: A score of is 3 standard deviations above the mean.

A: Let , X→N(μ=140 , σ=28) Our aim is to find the score 3 standard deviation above mean

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A: Suppose a random variable X, defines the scores in competency test for high school sophomores.

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A:

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A:

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Q: difficult exam has a normal distribution with a mean of 50 and a standard deviation of 10. Find the…

A: #  Here given that        X~Nμ,σ  and        z=x-μσ→                    1 So according to equation…

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A:

Q: Jared's time for the 100 meter sprint is 20.0 seconds at a school where the mean time for the 100…

A: Given data x = 20.0 secondsμ = 17.7 secondsσ= 2.1 secondsis the value unusual ?

Q: Your height in inches is compared to the people in this class, and your deviation is -1.  What does…

A: Here we have given the question about mean of the heights. Given, Your height in inches is compared…

Q: A distribution of values is normal with a mean of 187.9 and a standard deviation of 71.2. Find P80,…

A:

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5…

A: given data,normal distribution μ=5σ=3probability that person will wait more than 9 minutes =?

Q: The distribution of sample means for monthly employee income at a particular company for samples of…

A: The given data is as follows:Sample size, Sample mean, Sample standard deviation,

Q: A distribution of values is normal with a mean of 134 and a standard deviation of 71.4. Find P67…

A: Given: μ=134 and σ=71.4. From the given information,PZ<z=67%⇒PZ<z=0.67

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A: Solution: Let X be the number of gallons of gasoline sold. From the given information,

Q: Im

A: P10 , the score separating the bottom 10% from the top 90% is -21.8Explanation:

Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: Class  frequency (f) Mid vaue (x) f.x f.x2 0-199 342 99.5 34029 3385885.5 200-399 86 299.5 25757…