A normal distribution has a standard deviation equal to 25. What is the mean of this...
A normal distribution has a standard deviation equal to 25. What is the mean of this normal distribution if the probability of scoring above x = 191 is 0.0228? (Round your answer to one decimal place.)
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A normal distribution has a standard deviation equal to 25. What
is the mean of this...
Consider a normal distribution with mean 25 and standard deviation 5. What is the probability a...
Consider a normal distribution with mean 25 and standard
deviation 5. What is the probability a value selected at random
from this distribution is greater than 25? (Round your answer to
two decimal places.)
Assume that x has a normal distribution with the specified
mean and standard deviation. Find the indicated probability. (Round
your answer to four decimal places.)
μ = 14.9; σ = 3.5
P(10 ≤ x ≤ 26) =
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Assume that x has a...
A normal distribution has a mean equal to 48. What is the standard deviation of this...
A normal distribution has a mean equal to 48. What is the standard deviation of this normal distribution if 2.5% of the proportion under the curve lies to the right of x = 55.84? (Round your answer to two decimal places.)
A normal distribution has a mean equal to 46. What is the standard deviation of this normal distribution if 2.5% of the...
A normal distribution has a mean equal to 46. What is the standard deviation of this normal distribution if 2.5% of the proportion under the curve lies to the right of x = 51.88? (Round your answer to two decimal places.)
a. Consider a normal distribution with mean 20 and standard deviation 4. What is the probability...
a. Consider a normal distribution with mean 20 and standard deviation 4. What is the probability a value selected at random from this distribution is greater than 20? (Round your answer to two decimal places. b. Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 14.3; σ = 3.5 P(10 ≤ x ≤ 26) = c. Assume that x has a normal...
1. X has a normal distribution with the given mean and standard deviation. Find the indicated...
1. X has a normal distribution with the given mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 41, σ = 20, find P(35 ≤ X ≤ 42) 2. Find the probability that a normal variable takes on values within 0.9 standard deviations of its mean. (Round your decimal to four decimal places.) 3. Suppose X is a normal random variable with mean μ = 100 and standard deviation σ = 10....
Assume that x has a normal distribution with the specified mean and standard deviation. Find the...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 8; σ = 2 P(7 ≤ x ≤ 11) = Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 6.0; σ = 1.4 P(7 ≤ x ≤ 9) = Assume that x has a normal...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) H = 48; 0 = 16 P(40 sxs 47) = Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) u = 14.6; 0 = 3.3 P(8 SX s 12) = Assume that x has a normal distribution with the...
5. If a normal distribution has a mean of 30.5 and a standard deviation of 8.5,...
5. If a normal distribution has a mean of 30.5 and a standard deviation of 8.5, what is the value of the random variable X that has an area to its left equal to 0.8749? (round to one decimal place)
Assume that x has a normal distribution with the specified mean and standard deviation
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 28; α = 3.6 P(x ≥ 30) = _______
A normal distribution has a mean of 25 and a standard deviation of 3. Find the...
A normal distribution has a mean of 25 and a standard deviation of 3. Find the value above which there is a .70 probability that an observation will occur. (4 points)
Consider a normal distribution with mean 25 and standard
deviation 5. What is the probability a value selected at random
from this distribution is greater than 25? (Round your answer to
two decimal places.)
Assume that x has a normal distribution with the specified
mean and standard deviation. Find the indicated probability. (Round
your answer to four decimal places.)
μ = 14.9; σ = 3.5
P(10 ≤ x ≤ 26) =
Need Help? Read It
Assume that x has a...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) H = 48; 0 = 16 P(40 sxs 47) = Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) u = 14.6; 0 = 3.3 P(8 SX s 12) = Assume that x has a normal distribution with the...
5. If a normal distribution has a mean of 30.5 and a standard deviation of 8.5, what is the value of the random variable X that has an area to its left equal to 0.8749? (round to one decimal place)
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