For a Normal distribution with mean, μ=2, and standard
deviation, σ=4, 30% of all observations have a value less
than
Round to 4 decimal places.
For a Normal distribution with mean, μ=2, and standard deviation, σ=4, 30% of all observations have...
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...
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...
For a Normal distribution with μ = 11.4 μ = 11.4 and σ = 2.9 σ = 2.9 . What proportion of observations have values less than 17? Upload your image here: Edit Insert Formats Enter your final answer below, Round to 4 decimal places.
Suppose x has a normal distribution with mean μ =45 and standard deviation σ 12 Describe the distribution of x values for sample size n-4. (Round ơ to two decimal places.) 阪- 吸- Describe the distribution of x values for sample size n-16. (Round σ5 to two decimal places.) Describe the distribution of x values for sample size n = 100. (Round 恢ー ox- to two decimal places.)
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...
X is a normal random variable with mean μ and standard deviation σ. Then P( μ− 1.6 σ ≤ X ≤ μ+ 2.6 σ) =? Answer to 4 decimal places.
Questions 23-30: A normal population has a mean μ = 50 and a standard deviation σ = 8. That is, ?~?(50,8). Circle your final answer for each question below. 23. What is the z-score for an individual with a value of 38? 24. What is the probability that a randomly chosen individual from this population will be greater than 40? 25. What is the probability that a randomly chosen individual from this population will be between 44 and 60? 26....
Let X be normal with mean μ and standard deviation σ. a) The cumulative distribution satisfies F(σ) = 50% b) X is bimodal with modes as μ- σ and μ+σ c) F(μ-σ) = 1-F(μ+σ) d) Z = (X-μ)/σ is the standard unit normal. e) If a<c<b, the (F(b)-F(a))>(F(c)-F(a))
If X has a normal distribution with mean μ and standard deviation σ, and Z is the standard normal random variable whose cumulative distribution function is P(Z s Z)-0(Z), then which of the following statements is NOT correct? O E. All of the given statements are not correct
Suppose the random variable X follows a normal distribution with mean μ=53and standard deviation σ=10. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) P(X<43)= b) P(X>63)= c) P(48<X<68)=