Find the z-scores that bound the middle 94% of the area under the standard normal curve. Include a sketch to illustrate the problem, and state how you used your calculator.
Added by William H.
Step 1
- Using the z-table, we find that the z-score corresponding to the area to the left of 0.75 is 0.77337. Show more…
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Use the TI-84 calculator to find the z-scores that bound the middle 96% of the area under the standard normal curve. Enter the answers in ascending order and round to two decimal places. The z-scores for the given area are and .
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Find the indicated z-score. Be sure to draw a standard normal curve that depicts the solution. Find the $z$ -scores that separate the middle $94 \%$ of the distribution from the area in the tails of the standard normal distribution.
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