Question

The study is:

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 Data Set Scenario 1 Excel file).

(Month) (Average Age Starting to Crawl (weeks)) (Average Temperature 6 Months After Birth Month (in units Fahrenheit))

the numbers 00.00 are the weeks and the 00 average temp.

January 29.84 66

February 30.52 73

March 29.70 72

April 31.84 63

May 28.58 52

June 31.44 39

July 33.64 33

August 32.82 30

September 33.83 33

October 33.35 37

November 33.38 48

December 32.32 57

* Adapted from this study: Benson, J. B. (1993). Season of birth and onset of locomotion: Theoretical and methodological implications. Infant Behavior and Development, 16, 69–81.

Indicate your research hypotheses (null and alternative), incorporating the appropriate symbols. [To answer this question, you need, in part, to look at the research scenario.]

Answer: H0: ?= 0

H1: ?> 0 Is this correct?

State what the hypotheses mean. [Some overlap may exist with your answer to # 1. These are related rather than mutually exclusive questions.]

Answer 1

Let's enter the data in Excel and perform the regression by going to data>data analysis tab and select the regression which is shown in below