A researcher is interested in whether the weather affects the ...

[NguyenJ]

A researcher is interested in whether the weather affects the number of muggings
that occur in a city park. To study this question, he records the number of
muggings that are reported to the police in a city park on three extremely hot
summer days, three warm spring days, and on three cold winter days.





Calculate the mean square between groups

[af]

[mia]

A researcher is interested in whether the weather affects the number of muggings
that occur in a city park. To study this question, he records the number of
muggings that are reported to the police in a city park on three extremely hot
summer days, three warm spring days, and on three cold winter days.





Calculate the mean square within groups

[debra928]

[meagbuch]

A researcher is interested in whether the weather affects the number of muggings
that occur in a city park. To study this question, he records the number of
muggings that are reported to the police in a city park on three extremely hot
summer days, three warm spring days, and on three cold winter days.





Calculate the F ratio.

[yifu223]

[sheilaspns]

A researcher is interested in whether the weather affects the number of muggings
that occur in a city park. To study this question, he records the number of
muggings that are reported to the police in a city park on three extremely hot
summer days, three warm spring days, and on three cold winter days.





Are your results statistically significant, and if so, at what level?

[Pswine]

Significant at the .05 level

[tichca]

A researcher is interested in whether the weather affects the number of muggings
that occur in a city park. To study this question, he records the number of
muggings that are reported to the police in a city park on three extremely hot
summer days, three warm spring days, and on three cold winter days.





What are your conclusions about the null hypothesis?

[choc0chan]

The null hypothesis is rejected. It appears there is a relationship between type of
temperature and the number of muggings in the population.