etX be normally distributed with mean μ = 120 and standard deviation σ = 20. (a)...
Assume X is normally distributed with a mean of 7 and a standard deviation of 2. Determine the value for x that solves each of the following Round the answers to 2 decimal places. a) P(X >x) = 0.5 b) P(X > x) = 0.95
7. Hint for c and d: given P(X S x) a percentage, we have P(Z Sz)the percentage. Then find the corresponding value for Z, and use the Inverse Transformation Let X be normally distributed with mean 120 and standard deviation σ 20. a. Find P(X3 86). b. Find P(80 <X3100). c. Find x such that P(Xx) 0.40. d. Find x such that P(X> x) 0.90.
6) Assume X is a normally distributed random variable with mean μ= 53 and standard deviation σ-12. Find P(52<X< 62). A) 0.5137 B)0.4269 C) 0.3066 D) 0.2108 E) 0.3635
3. Suppose that X is normally distributed with mean 75 and standard deviation 10. Determine the following: a) P(X > 90) b) P(X> 60) e) P(65 <X < 75) d) Find the value for α that satisfies the equation P(75-α < X < 75+a) = 0.80128.
9. IfX is a r.), distributed as N(μ, σ2), find the value of c (in terms of μ and σ) for which P(Xc 2-9P(X > c).
Let X be normally distributed with mean μ-126 and standard deviation σ-22. Mou may find it useful to reference the ztabel a. Find AX s 100). (Round z value to 2 decimal places and final answer to 4 decimal places.) PX 100) 0.1151 b. Find P95 sXs110). (Round "value to 2 decimal places and final answer to 4 decimal places.) P(95 sX s 110) c. Find x such that FXsx) = 0.410. (Round "z" value and final answer to 3...
Let X be normally distributed with mean μ. 126 and standard deviation σ-22. [You may find it useful to reference the ztable.] a. Find AX s 100). (Round" value to 2 decimal places and final answer to 4 decimal places.) POX S 100) b. Find P95 sX s110) (Roundr value to 2 decimal places and final answer to 4 decimal places.) P(95 SXS 110) c. Find x such that PXsX)-0.410. (Round " value and final answer to 3 decimal places.)...
Let X be normally distributed with mean μ = 137 and standard deviation σ = 20. [You may find it useful to reference the z table.] a. Find P(X ≤ 100). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) b. Find P(95 ≤ X ≤ 110). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) c. Find x such that P(X ≤ x) = 0.340. (Round "z" value and...
x-μ 6. Hint: use the formula*. If X falls within a range, transform both lower and upper limits. Let X be normally distributed with mean deviation σ 4 a. Find P(X30). b. Find P(X> 2), c. Find P(4 <X< 10). d. Find P(6 <X< 14) 10 and standard
A population has a mean μ-85 and a standard deviation σ-21. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 49 H(Simplity your answer) o-# L] (Simplify your answer.) to the random variable x is normally distributed with mean-83 and standard deviation ơ-4 Find the indicated probability P(70sx 76) P(70 < x < 76)= Round to four decimal places as needed.) Enter your answer in the answer box