Question

question 9 0.5 pts what z - score represents the highest 30% in a standard normal distribution? 0.65 0.66 50 0.52 0.50 0.55 question 10 0.5 pts what z - score represents the lowest 44% in a standard normal distribution?

Explanation:

Step1: Recall z - score table concept

We use the standard normal distribution table (z - score table). The table gives the cumulative probability from the left - hand side of the distribution.

Step2: For highest 30% in Question 9

If we want the highest 30% of the data, we need to find the z - score such that the cumulative probability is \(1 - 0.30=0.70\). Looking up 0.70 in the standard normal distribution table, the closest z - score is approximately \(z = 0.52\).

Step3: For lowest 44% in Question 10

We directly look up the cumulative probability of 0.44 in the standard normal distribution table. The z - score corresponding to a cumulative probability of 0.44 is approximately \(z=- 0.15\) (but this is not in the options, and we assume we are using the positive - valued z - score for the left - hand side in a non - negative sense for the multiple - choice context). Looking up 0.44 in the table gives a z - score close to \(z=-0.15\), and if we consider the closest positive - looking value from the table for the concept in the options, we note that the closest value to the cumulative probability of 0.44 in the table gives a z - score close to \(z = - 0.15\), and among the options, we consider the closest positive - looking value related to the left - hand side of the distribution concept. But for the highest 30% case, the correct z - score is found by looking at the cumulative probability of 0.70.

Answer:

Question 9: 0.52
Question 10: No correct option among given ones (but closest conceptually related to looking up 0.44 in z - table)