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Mathematics Clinic => Statistics => Topic started by: jho37 on Aug 30, 2019

Title: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of ...
Post by: jho37 on Aug 30, 2019

Question 1

A survey asked people "On what percent of days do you get more than 30 minutes of vigorous exercise?" Using their responses we want to estimate the difference in exercise frequency between men and women. We should use a
◦ 1-sample t-interval
◦ matched pairs t-interval
◦ 2-sample t-interval
◦ 1-proportion z-interval
◦ 2-proportion z-interval

Question 2

Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of tomato plants suffering from blight. One rejected the hypothesis but the other did not. Assuming neither made a mistake in calculations, which of these possible explanations could account for this apparent discrepancy?
I.   One agronomist wrote a one-tailed alternative hypothesis, but the other used 2 tails.
II.  They wrote identical hypotheses, but the one who rejected the null used a higher α-level.
III. They wrote identical hypotheses, but the one who rejected the null used a lower α-level.
◦ I only
◦ I or III
◦ III only
◦ II only
◦ I or II

Title: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of ...
Post by: micaelaswann on Aug 30, 2019

Answer 1

2-sample t-interval

Answer 2

I or II

Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: sourabh gangwar on Jun 22, 2020

thank you

Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: Alexandria Skinner on Nov 8, 2020

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Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: Big Monke on Mar 16, 2021

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Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: Laura Solimani [STUDENT] on Mar 18, 2021

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Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: Dean O_Brien on Aug 12, 2021

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Title: Re: Two agronomists analyzed the same data, testing the same null hypothesis about the proportion of
Post by: Kristina on Apr 18, 2024

thank u