Question

In: Statistics and Probability

Researchers want to examine whether or not there is a difference in birthweight for mothers who...

Researchers want to examine whether or not there is a difference in birthweight for mothers who smoke and mothers who do not smoke. Their alternate hypothesis is Ha: μ1 ≠ μ2.They collect smoking status and birthweight information for 189 pregnancies. For your convenience, I have prepared an Excel file with the data

Nonsmoker	Smoker
2877	2600
3062	2665
3234	2769
3459	2769
3473	2906
3586	2992
3600	3076
3614	3076
3827	3132
3941	3317
4111	3374
2100	3629
2353	3637
2637	3643
2836	3651
2977	3651
3100	3756
3317	3940
3416	4238
3460	1818
3614	1885
3651	1928
3651	1936
3699	2084
3728	2084
3770	2225
3799	2296
3912	2410
3997	2424
4054	2466
4174	2557
4593	2663
4990	2821
2920	2948
3062	3033
3090	1790
3860	2187
3983	2353
4153	2410
4167	2594
1021	2977
2082	2977
2835	3005
3080	3147
2523	3856
2778	3884
2977	1928
3374	2466
3402	2782
3790	2414
2187	2495
2495	3430
2920	2920
2920	3444
3062	1135
1701	2296
3317	2381
1928	2381
2438	2948
3860	2367
2622	3042
2722	2126
2750	3090
2807	3203
2863	3260
3090	3572
3104	709
3175	2125
3175	2211
3203	2466
3203	2495
3225	3331
3225	3321
3232	3303
3475
3487
3544
3572
3770
3770
3969
4054
1330
1474
1588
1729
1893
1970
2055
2240
2282
2325
2381
2395
2637
2733
3274
3884
3941
3997
1588
1899
2055
2240
2442
2750
2835
2877
3232
3274
3629
2495
2551
2450
2301

Use a t-test to test the hypothesis that there is a difference in birthweight for mothers who smoke and mothers who do not smoke at the α = 0.05 level. Assume unequal variance between the groups.

What is the p-value for this result?

Expert Solution

This problem is solved by using Excel.

Input :

Outside is

Analysis Path : Data >>Data Analysis >> T test two sample assuming unequal Variances.

Results :

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orchestra answered 3 years ago

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