Reporting a two sample z test for proportions

Reporting Two-Sample Z-Test For Proportions

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[insert a description of a sample proportion]

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[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage]

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[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly

Template

[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly [insert “different”, “higher”, “lower”, “more”, “less”, etc.] [insert the dependent variable]

Template

[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly [insert “different”, “higher”, “lower”, “more”, “less”, etc.] [insert the dependent variable] than

Template

[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly [insert “different”, “higher”, “lower”, “more”, “less”, etc.] [insert the dependent variable] than [insert a description of the other sample proportion],

Template

[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly [insert “different”, “higher”, “lower”, “more”, “less”, etc.] [insert the dependent variable] than [insert a description of the other sample proportion], z = 0.00, p = .000.

Template

[insert a description of a sample proportion] [Insert the result in terms of a proportion or a percentage] is statistically significantly [insert “different”, “higher”, “lower”, “more”, “less”, etc.] [insert the dependent variable] than [insert a description of the other sample proportion], z = 0.00, p = .000.

Here is an example problem:

Here is an example problem:

In a small town in Massachusetts, a town well supplied water that was contaminated by industrial chemicals to the west side residents but not to the east side residents, because they used a different well.

Here is an example problem:

In a small town in Massachusetts, a town well supplied water that was contaminated by industrial chemicals to the west side residents but not to the east side residents, because they used a different well. During that period of time a sample of 414 births on the west side showed 16 birth defects and a sample of 228 births on the east side showed 3 birth defects.

Here is an example problem:

In a small town in Massachusetts, a town well supplied water that was contaminated by industrial chemicals to the west side residents but not to the east side residents, because they used a different well. During that period of time a sample of 414 births on the west side showed 16 birth defects and a sample of 228 births on the east side showed 3 birth defects. A law suit is pending against the city for negligence.

Here is an example problem:

In a small town in Massachusetts, a town well supplied water that was contaminated by industrial chemicals to the west side residents but not to the east side residents, because they used a different well. During that period of time a sample of 414 births on the west side showed 16 birth defects and a sample of 228 births on the east side showed 3 birth defects. A law suit is pending against the city for negligence. How strong is their evidence statistically?

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 3 - [insert the dependent variable]“birth defects”

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 3 - [insert the dependent variable]“birth defects”

Step 4 – [Insert the result in terms of a proportion or a percentage](.04)

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 3 - [insert the dependent variable]“birth defects”

Step 4 – [Insert the result in terms of a proportion or a percentage](.04)

Step 5 – “than” [insert a description of the other sample proportion],“than residents who were not exposed to the contaminated water”

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 3 - [insert the dependent variable]“birth defects”

Step 4 – [Insert the result in terms of a proportion or a percentage](.04)

Step 5 – “than” [insert a description of the other sample proportion],“than residents who were not exposed to the contaminated water”

Step 6 – insert z statistic“z = 2.35”

Step 1 - [insert a description of a sample proportion]“Residents who were exposed to water contaminated with

industrial chemicals”Step 2 – “had statistically significantly” [insert “different”, “higher”, “lower”,

“more”, “less” etc.] “had statistically significantly more”

Step 3 - [insert the dependent variable]“birth defects”

Step 4 – [Insert the result in terms of a proportion or a percentage](.04)

Step 5 – “than” [insert a description of the other sample proportion],“than residents who were not exposed to the contaminated water”

Step 6 – insert z statistic“z = 2.35”

Step 7 – insert p value“p = .001

Final Two-Sample Z-Test Report:

Final Two-Sample Z-Test Report:

Residents who were exposed to water contaminated with industrial chemicals had statistically significantly more birth defects (.04) than residents who were not exposed to the contaminated water. z = 2.35, p = .001.

Residents who were exposed to water contaminated with industrial chemicals had statistically significantly more birth defects (.04) than residents who were not exposed to the contaminated water. z = 2.35, p = .001.