In a large section of a Statistics class, the points for the 300-point final exam are (approximately) normally distributed with a mean of 180.2 and a standard deviation of 47.3. The professor had previously announced that grades would be awarded based "on a curve", such that: • The top 5% receive A's The next lower 25% receive B's The middle 40% receive C's ● The next lower 25% receive D's The bottom 5% receive F's 12 (SAI QUAV A 3TIW bas anois lso gnimo Jovel abitrios swol edd diw levisini gonebitno Start by showing how the bell curve below would be divided into five zones for the five grade ranges explained above (this should consist of four dividing lines to create five grade ranges). What are the lowest raw scores that would qualify a student for an A, B, C, and D? Show valid supporting work, making sure to clearly indicate the z-values you used to generate these scores.

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In a large section of a Statistics class, the points for the 300-point
final exam are (approximately) normally distributed with a mean of 180.2 and a standard
deviation of 47.3. The professor had previously announced that grades would be awarded
based "on a curve", such that:
suppor
The top 5% receive A's
The next lower 25% receive B's
● The middle 40% receive C's
●
• The next lower 25% receive D's
The bottom 5% receive F's
3TIAW bas enoit oleo gnitio
Oneshl
abitrios 19wol odd ddiw lsvisini sonebitno
Start by showing how the bell curve below would be divided into five zones for the five grade
ranges explained above (this should consist of four dividing lines to create five grade ranges).
What are the lowest raw scores that would qualify a student for an A, B, C, and D? Show valid
supporting work, making sure to clearly indicate the z-values you used to generate these scores.
Transcribed Image Text:In a large section of a Statistics class, the points for the 300-point final exam are (approximately) normally distributed with a mean of 180.2 and a standard deviation of 47.3. The professor had previously announced that grades would be awarded based "on a curve", such that: suppor The top 5% receive A's The next lower 25% receive B's ● The middle 40% receive C's ● • The next lower 25% receive D's The bottom 5% receive F's 3TIAW bas enoit oleo gnitio Oneshl abitrios 19wol odd ddiw lsvisini sonebitno Start by showing how the bell curve below would be divided into five zones for the five grade ranges explained above (this should consist of four dividing lines to create five grade ranges). What are the lowest raw scores that would qualify a student for an A, B, C, and D? Show valid supporting work, making sure to clearly indicate the z-values you used to generate these scores.
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