A population is normally distributed with μ=200 and σ=25. a. Find the probability that a value...
A population is normally distributed with μ=200 and σ=25.
|
a. |
Find the probability that a value randomly selected from this population will have a value greater than 245. |
|
b. |
Find the probability that a value randomly selected from this population will have a value less than 190. |
|
c. |
Find the probability that a value randomly selected from this population will have a value between 190 and 245. |
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A population is normally distributed with μ=200 and σ=25.
a.
Find the probability that a value...
A population is normally distributed with μ = 200 and σ = 20. a. Find the...
A population is normally distributed with μ = 200 and σ = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250. P(x > 250) = ______ . (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185. P(x < 185) = ______ . (Round to four decimal places as needed.) c. Find the...
A population is normally distributed with μ = 200 and σ = 20. a. Find the...
A population is normally distributed with μ = 200 and σ = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250. P(x > 250) = ______ . (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185. P(x < 185) = ______ . (Round to four decimal places as needed.) c. Find the...
A population is normally distributed with u = 200 and o = 20. a. Find the...
A population is normally distributed with u = 200 and o = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250. P(x > 250) = . (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185. Plx < 185) = (Round to four decimal places as needed.) c. Find the probability that a...
A population is normally distributed with u = 200 and o = 20. a. Find the...
A population is normally distributed with u = 200 and o = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250 P(x > 250) - (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185.
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We have a normally distributed population of scores with μ = 25 and σ = 5. We have drawn a large number of random samples with a particular sample size of n = 10 from this population. We want to know what the probability that a sample mean will be equal to or greater than 23. First, what is the z-score for our sample mean of interest, 23? Using this z-score , use statistics table to answer the question "What...
A random sample of size n = 25 is obtained from a normally distributed population with...
A random sample of size n = 25 is obtained from a normally distributed population with population mean μ =200 and variance σ^2 = 100. a) What are the mean and standard deviation of the sampling distribution for the sample means? b) What is the probability that the sample mean is greater than 203? c) What is the value of the sample variance such that 5% of the sample variances would be less than this value? d) What is the...
Assume that women's heights are normally distributed with a mean given by μ=62.2 in,and a standard...
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A population is normally distributed with u = 200 and o = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250. P(x > 250) = . (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185. Plx < 185) = (Round to four decimal places as needed.) c. Find the probability that a...
A population is normally distributed with u = 200 and o = 20. a. Find the probability that a value randomly selected from this population will have a value greater than 250 P(x > 250) - (Round to four decimal places as needed.) b. Find the probability that a value randomly selected from this population will have a value less than 185.
Assume the random variable X is normally distributed with mean μ= 50 and standard deviation σ 7. Find the 87th percentile. The 87th percentlie is Round to two decimal places as needed.) The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips (a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive? (b) What...
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