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(8, 1). What value of x has a z-score of −1.25? (Enter an...
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 ~ N(8, 6). What value of x has a z-score of -0.4? x = ______? Round to one decimal place. If your answer is a whole number, just type that number without a decimal.
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 =
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 =
Suppose X ~ N(2, 3). What value of x has a z-score of three?
Suppose X ~ N(2, 3). What value of x has a z-score of -0.67? If the area to the left of x in a normal distribution is 0.161, what is the area to the right of X?
Find σ. (Enter an exact number as an integer, fraction, or decimal.) X ~ N(3, 5)
Determine the z-score value in each of the following scenarios: a. What z-score value separates the top 8% of a normal distribution from the bottom 92%? Using standard normal table, a) P(Z < z) = 0.92 To see the probability 0.92 in the standard normal table the corresponding z value is 1.405 . P(Z < 1.405) = 0.92 z - score = 1.405 b) P(Z < z) = 0.28 Please can you show me how to get the exact calculations...
Find the probability that x falls in the shaded area. (Enter an exact number as an integer, fraction, or decimal.) 0 12 3 45 6 7 8 9 10
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)?...