Question 17 2 pts Find the value of z-score such that 32.0% of all observations from...
Find the value of z-score such that 30.0% of all observations from a standard normal distribution are less than that z. (Round your values to the second decimal place) (Hint: use cumulative standard normal distribution z-table) O z= -1.05 O z = 1.64 O z = 1.05 O Not enough information to answer the question O z = 0.52 O z = -1.64 O None of the given numerical values is correct O z = -0.52
2 pts Find the proportion of observations from a standard normal distribution curve that satisfies z-score: -0.1<z< 1.0 Round numerical value to the second decimal place. (Hint: use cumulative standard normal distribution z-table) O 0.62 O 0.38 0.32 O 0.25 O 0.48 0.44 Not enough information to answer the question None of the given numerical values is correct
Find the proportion of observations from a standard normal distribution curve that satisfies z-score: -0.2<z< 0.6 Round numerical value to the second decimal place, (Hint: use cumulative standard normal distribution z-table) None of the given numerical values is correct 0.41 Not enough information to answer the question 0.38 0.23 0.31 0.16 0.69
Question 11 2 pts Consider the sample with the 5 observations {5, 8, 14, 17, 19) for which the mean is 12.8 and the standard deviation is 6.22. If we change the sample by subtracting 1.3 from each value, what are the new mean and the new standard deviation respectively? None of the given pairs of numerical values is correct New mean = 10.2; new sd - 4.92 New mean = 10.2; new sd = 7.52 New mean = 12.8;...
Question 6 2 pts The expected value of a binomial probability distribution with n = 13 and p = 0.58 is O 22.4 O 0.580 Not enough information to answer the question O 7.54 42.0 58.0 5.46 None of the given numerical values is correct
Question 10 2 pts The probabilities of the discrete random variable X are taking values shown in the table: X 2 4 6 8 10 PIX=x) 0.18 0.31 0.34 0.10 0.07 What is the standard deviation of the distribution? (Round your answer to the third decimal place) O 2.214 0.200 6.000 O 0.121 Not enough information to answer the question O 10.000 None of the given numerical values is correct 03.162
4 pts Question 47 8, find the Z-score corresponding to each of the following X For a population with a h = 40 and o = values: a. X-42; b. X-52; c. X=36; d. X-32 HTML Editor A population of scores with a u = 43 and o = 8 is standardized to create a new population distribution with a fi = 50 and o = 10. What is the new X value for each of the following scores from...
21) (8 points) The Z-score for an observation from a Normal distribution is -0.4. For the following, choose the one answer that is most appropriate. a. The observation is Left of the mean Right of the mean Very close to the mean It cannot be determined without knowing the mean and standard deviation b. Observations smaller than this value comprise The majority of the distribution Slightly less than half of the values in the distribution Unusually large observations It cannot...
Question 11 4 pts Find an approximate value of the standard normal random variable z, called to such that P (2>20) = 0.70. O -0.52 O -0.98 -0.47 -0.81 < Previous Next
2ULOU This Test: 30 pts pos Question Help Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. Click to view page 1 of the table. Click to view page 2 of the table. © 0.9564 2 The indicated z score is .83 (Round to two decimal places as needed.) Enterveur answer in the answer box 617 PM