Math  /  Data & Statistics

QuestionFind the z-score that has 3.533%3.533 \% of the distribution's area to its left.
The z-score is \square (Round to two decimal places as needed.)

Studdy Solution

STEP 1

1. We are working with a standard normal distribution, which has a mean of 0 and a standard deviation of 1.
2. The z-score corresponds to the cumulative probability (area to the left under the curve).

STEP 2

1. Understand the relationship between z-scores and cumulative probabilities.
2. Use statistical tables or software to find the z-score for the given cumulative probability.

STEP 3

Understand that the z-score is a measure of how many standard deviations an element is from the mean. The cumulative probability given is 3.533%3.533\%, which is equivalent to 0.035330.03533 in decimal form.

STEP 4

Use a z-table, calculator, or statistical software to find the z-score corresponding to a cumulative probability of 0.035330.03533.

STEP 5

Look up the cumulative probability 0.035330.03533 in the z-table or use software to find the z-score. The closest cumulative probability in standard z-tables is typically found between two values. For 0.035330.03533, the z-score is approximately 1.81-1.81.
The z-score is:
1.81 \boxed{-1.81}

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