Two Proportions Z hypothesis test
Two variances F hypothesis test
Two means Z hypothesis test
Two means T (non-pooled) Hypothesis test
Two means T (pooled) hypothesis test
Two paired means T hypothesis test
A research study was conducted about gender differences in 'sexting'. The researcher believed that the percentage of girls involved in 'sexting' is greater than the percentage of boys involved. The data collected in the spring of among a random sample of middle and high school students in a large school district in Illinois is summarized next: out of 190 females 35 sent 'sexts' and out of 220 males 25 sent 'sexts'. Is the percentage of girls sending sexts greater than the percentage of boys 'sexting'? Choose the appropriate procedure. Procedure: Assumptions: (select everything that applies) Population standard deviation are unknown but assumed equal Population standard deviations are known Normal populations Sample sizes are both greater than 30 Population standard deviation are unknown Paired samples Independent samples Simple random samples The number of positive and negative responses are both greater than 10 for both samples
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Two Proportions Z hypothesis test Two variances F hypothesis test Two.docx
1. Two Proportions Z hypothesis test
Two variances F hypothesis test
Two means Z hypothesis test
Two means T (non-pooled) Hypothesis test
Two means T (pooled) hypothesis test
Two paired means T hypothesis test
A research study was conducted about gender differences in 'sexting'. The researcher believed
that the percentage of girls involved in 'sexting' is greater than the percentage of boys involved.
The data collected in the spring of among a random sample of middle and high school students in
a large school district in Illinois is summarized next: out of 190 females 35 sent 'sexts' and out of
220 males 25 sent 'sexts'. Is the percentage of girls sending sexts greater than the percentage of
boys 'sexting'? Choose the appropriate procedure. Procedure: Assumptions: (select everything
that applies) Population standard deviation are unknown but assumed equal Population standard
deviations are known Normal populations Sample sizes are both greater than 30 Population
standard deviation are unknown Paired samples Independent samples Simple random samples
The number of positive and negative responses are both greater than 10 for both samples
