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Author Question: A set of data items is normally distributed with a mean of 60. Convert the data item to a z-score, ... (Read 172 times)

Starlight

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on: Feb 2, 2020

Question 1

Suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000. Use the 68-95-99.7 rule to find the percentage of buyers who paid:

less than $145,600 if the standard deviation is $2200.
◦ 2.5%
◦ 95%
◦ 97.5%
◦ 47.5%

Question 2

A set of data items is normally distributed with a mean of 60. Convert the data item to a z-score, if the standard deviation is as given.

data item: 70;  standard deviation: 10
◦ 10
◦ 70
◦ 6
◦ 1
Thinking Mathematically ¦ Blitzer ¦ 6th Edition
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Marked as best answer by Starlight on Feb 2, 2020

1_Step_At_ATime

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Reply #1 on: Feb 2, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Starlight

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Reply 2 on: Feb 2, 2020
Excellent

xiazhe

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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