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Author Question: A study was designed to investigate the effects of two variables - (1) a student's level of ... (Read 41 times)

gonzo233

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on: Jan 16, 2020
A study was designed to investigate the effects of two variables - (1) a student's level of mathematical anxiety and (2) teaching method - on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 380 with a standard deviation of 20 on a standardized test. Assuming a bell-shaped distribution, where would approximately 95% of the students score?
◦ between 340 and 420
◦ below 340 or above 420
◦ between 320 and 440
◦ below 320 or above 440
Statistics: Informed Decisions Using Data ¦ Sullivan ¦ 5th Edition
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Marked as best answer by gonzo233 on Jan 16, 2020

Joy Chen

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Reply #1 on: Jan 16, 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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gonzo233

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Reply 2 on: Jan 16, 2020
:D TYSM

bulacsom

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Reply 3 on: Yesterday
Wow, this really help

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