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Author Question: A company claims that 9 out of 10 doctors (i.e., 90%) recommend its brand of cough syrup to their ... (Read 90 times)

CORALGRILL2014

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on: Feb 14, 2020

Question 1

A company claims that 9 out of 10 doctors (i.e., 90%) recommend its brand of cough syrup to their patients. To test this claim against the alternative that the actual proportion is less than 90%, a random sample of 100 doctors was chosen which resulted in 83 who indicate that they recommend this cough syrup. The test statistic in this problem is approximately:
◦ -2.33
◦ 2.33
◦ -1.99
◦ -1.83

Question 2

A company claims that 9 out of 10 doctors (i.e., 90%) recommend its brand of cough syrup to their patients. To test this claim against the alternative that the actual proportion is less than 90%, a random sample of doctors was taken. Suppose the test statistic is z = -2.23. Can we conclude that H0 should be rejected at the and level?
◦ a) no; b) no; c) yes
◦ a) yes; b) yes; c) yes
◦ a) yes; b) yes; c) no
◦ a) no; b) no; c) no
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by CORALGRILL2014 on Feb 14, 2020

tmlewis4706

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Reply #1 on: Feb 14, 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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CORALGRILL2014

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Reply 2 on: Feb 14, 2020
Wow, this really help

Mochi

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Reply 3 on: Yesterday
:D TYSM

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