For questions 27-30, derive z-scores, given the following the p-values: 27. p.90 a. 1.28 b. .13...
3. P(z<zc)=0.95. Find ze (a) 1.28 (b) 1.645 (c) 1.96 (d) -1.645
Need the answers diagramed 6) Find the indicated probabilities. [3pts. each] a) P(z < 1.28) b) P(-2.15 z 1.55) c) P(z> 1.64) d) ? = 5.5, ? = .08, P(5.36 < x < 5.64) e) ?--8.2, ?-7.84, P(x-5.00) 18.5, ? 9.25, P(x < 5.24) tion 3nts
Given P(x) = 2x2 +10x+15 find the function value P(-2) I a) -13 b) 27 c) 3 d) 43 a.. Ob.. O c.. Od.. .
1. Compute the Z scores for the first five values and Compute the Z scores for the next five values. 2. Compute the Z scores for the last three values. 3. The data set below is the cost (in cents) per 1-ounce serving for a sample of 13 chocolate chip cookies. Complete parts (a) through (d) below. 52 20 25 23 35 43 10 43 25 45 22 4648 Compute the Z scores for the first five values Z Score...
7. z-scores and standardized scores Is a standardized score necessarily a z-score? Yes No Consider the following distribution of scores with a mean of 90 and a standard deviation of 30. For the letters A, B, C, and D in the boxes beneath the line labeled "z" give the z-scores corresponding to each position in the distribution. One z-score is already filled in (-1) Suppose you also want to standardize these scores to a "k" scale where the mean of...
2. Find the critical values, Z-scores, for the following confidence intervals by showing a graph and respective areas: a) 90% z-scores b) 99 % t-scores. n=51
Find the critical values for the following confidence intervals (Z-scores) (Please show your work) a.) 99% b.) 98% c.) 90%
Given the following data set, answer the questions below: x 11 12 13 14 15 p(x) .20 .20 .30 .05 .25 1. What is the table above called? 2. What information is provided from the table? 3. What is the total probability of the sample space? 4. P(X > 13) 5. P(X ≥ 13) 6. P(X ≤ 14) 7. P(X = 15) 8. F(15) 9. F(14) 10. E(X) 11. V(X)
d the area under the standard normal curve that corresponds to the following Z values, e given bell shaped curves, identify, and shade the appropriate region: (1 point ea) Fin Use th 11) P(z > 2.37) 12) P(z< -1.26) 13) P (-0.85<z2.44) 14) Find the Z score for the standard normal distribution using the given bell shaped curve P( -z<Z<z)-0.95 15) Find the Z score for the standard normal distribution using the given bell shaped curve P(Z>z)-0.881000
WHICHI OT the following statements is not true concerning the attributes of z-scores? A) z-scores are positive for data values above the mean of the distribution. B) 2-scores are negative for data values below the mean of the distribution. C) 2-scores indicate how many standard deviations an observation is away from the me D) z-scores are equal to zero for data values equal to the mean of the distribution. E) none of the above