(50 ) The goal of the study is to compare numerical measurement of body condition (cond) between two different age groups Answer questions based on the SPSS outputs Independent samples t test Group Statistics Age N Mean Std Deviation Std Error Mean Older 31 43 81 4 423 794 younger 41 44 71 3 502 547 Levene's Test for Equality of Variances t test for Equality of Means F Sig t Sig (2 tailed) Cond Equal variances assumed 1 960 0456 1 865 0438 Equal variances not assumed 1 734 0524 Paired sample t test T Sig (2 tailed) pair 1 younger older 2 213 044 Choose the correct t test put a check in for your answer Paired sample t test Independent t test Yes State the hypotheses if you intend to prove that younger age group has a higher (which means better) mean body condition than the older age group Find t and p value of the test State your decision (in statistical language) What is your conclusion in English We don't have enough evidence to conclude younger people have higher body count than older people level of significance 0 05 (50 ) To compare drug effects of two drugs that were developed to reduce sugar level, a group of volunteers were recruited (view that as a random sample) The researcher ask each volunteer to use one of the two drug in the first time of taking a drug, and use the other drug when the second time a drug is used The amount of sugar reduction were recorded as the initial measure minus the sugar measure after one hour of using the corresponding drugs Paired samples t test t df Sig (2 tailed) pair 1 sugarA sugarB 2 213 27 0510 Independent samples t test Group Statistics drug N Mean Std Deviation Std Error Mean sugar A 31 13 81 4 423 794 B 41 14 71 3 502 547 Levene's Test for Equality of Variances t test for Equality of Means F Sig T df Sig (2 tailed) sugar Equal variances assumed 1 960 366 1 965 27 0638 Equal variances not assumed 1 934 25 779 0754 Choose the correct test State the hypotheses if you intend to prove that Drug A is better Find p value of the test State your decision What is your conclusion in a sentence

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(50%) The goal of the study is to compare numerical measurement of body condition (cond) between two different age groups. Answer questions based on the SPSS outputs.

Independent samples t test Group Statistics
	Age	N	Mean	Std. Deviation	Std. Error Mean
	Older	31	43.81	4.423	.794
younger	41	44.71	3.502	.547

	Levene's Test for Equality of Variances	t-test for Equality of Means
F	Sig.	t	Sig. (2-tailed)
Cond	Equal variances assumed	1.960	.0456	-1.865	.0438
Equal variances not assumed			-1.734	.0524

Paired sample t test:

Paired sample t test
Independent t test	Yes

State the hypotheses if you intend to prove that younger age group has a higher (which means better) mean body condition than the older age group.

We don't have enough evidence to conclude younger people have higher body count than older people level of significance 0.05

(50%) To compare drug effects of two drugs that were developed to reduce sugar level, a group of volunteers were recruited (view that as a random sample). The researcher ask each volunteer to use one of the two drug in the first time of taking a drug, and use the other drug when the second time a drug is used. The amount of sugar reduction were recorded as the initial measure minus the sugar measure after one hour of using the corresponding drugs.

Paired samples t test:

Independent samples t test Group Statistics

	Levene's Test for Equality of Variances	t-test for Equality of Means
F	Sig.	T	df	Sig. (2-tailed)
sugar	Equal variances assumed	1.960	.366	-1.965	27	.0638
Equal variances not assumed			-1.934	25.779	.0754