QUESTION IS: Based on the results (I already know the results, please do not lis

Question

QUESTION IS: Based on the results (I already know the results, please do not list them)  determine whether the data provide evidence for a valid effect.

And explain whether or not the results are statistically significant.

The question was investigated of whether (a) age at which infants start to crawl is related to (b) seasonal temperature six months after birth. "Six months after birth" was targeted as the period in which babies typically first try crawling. For a large sample of babies, (a) time at which crawling actually began and (b) average monthly temperature six months after the birth month were collected. The data are shown below (also found in the Month Average Age Starting to Craw Average Temperature 6 Months After Birth Month (in units Fahrenheit) (weeks) Januar Februa March April Ma June Jul August September October November December 29.84 30.52 29.70 31.84 28.58 31.44 33.64 32.82 33.83 33.35 33.38 32.32 73 72 63 52 39 30 37 48 57

Explanation / Answer

correlation between two variables = -0.69971

degree of freedom = n-2 = 10

critical value of r = 0.632   at 5 % level of significance (two-tailed)

sicne |TS| > critical value

we reject the null and conclude that data provide evidence for a valid effect. and the results are statistically significant.

age temp 29.84 66 30.52 73 29.7 72 31.84 63 28.58 52 31.44 39 33.64 33 32.82 30 33.83 33 33.35 37 33.38 48 32.32 57

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