Suppose X ~ N(3, 2). What value of x is two standard deviations to the right of the mean? (Enter an exact number as an integer, fraction, or decimal.) x =
Given that,
z = 2
Using z-score formula,
x = z * +
x = 2 * 2 + 3 = 7
value of x = 2
Suppose X ~ N(3, 2). What value of x is two standard deviations to the right...
24. About what percent of the x values from a normal distribution lie within two standard deviations (left and right) of the mean of that distribution? (Enter an exact number as an integer, fraction, or decimal.) _______ % 25. About what percent of x values lie between the mean and one standard deviation (one sided)? (Enter an exact number as an integer, fraction, or decimal.) _______ % 26. About what percent of x values lie between the first and third standard deviations (both sides)?...
suppose x~N(5,2.1). what x- value is 1.8 standard deviations to the left of the mean? round answer two decimal places
Suppose X~N(4, 2). a) What value of x is 1.5 standard deviations to the left of the mean? b) What is the 90th percentile of X? Express your answers with 3 decimals.
Suppose X ~ N(8, 1). What value of x has a z-score of −1.25? (Enter an exact number as an integer, fraction, or decimal.) x=
Suppose X ~ N(4, 3). What is the z-score of x = 4? (Enter an exact number as an integer, fraction, or decimal.) z =
Suppose X is a normal random Variable with mean p = 46 and standard deviations 11 (a) Compute the z-value corresponding to X = 30 (1) Suppose the area under the standard normal curve to the left of the value found in part(a) is 0.0729. What is the area under the normal curve to the left of X (c) What is the area under the normal curve to the right of X=30? 307 (Round to two decimal places as needed)
1.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 = 101; σ = 16 P(x ≥ 120) = 2.Suppose X ~ N(5, 9). What is the z-score of x = 5? (Enter an exact number as an integer, fraction, or decimal.) z =
33. If the area to the left of x in a normal distribution is 0.163, what is the area to the right of x? (Enter an exact number as an integer, fraction, or decimal)
Find σ. (Enter an exact number as an integer, fraction, or decimal.) X ~ N(3, 5)
Two samples are taken with the following sample means, sizes, and standard deviations I1 = 24 D9 = 25 n = 72 m2 = 59 81 = 3 89 = 2 Estimate the difference in population means using a 94% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. 11-12 Box 1: Enter your answer as an integer or decimal number. Examples: 3,-4,5.5172 Enter DNE for Does Not Exist, oo for...