题目内容

Concerning the carotid sinus, the right description is ()

A. It is a dilatation at the posterior wall of the common carotid artery.
B. It is a dilatation at the point of the bifurcation of the common carotid artery.
C. It is a small ball structure behind the point of division of the common carotid artery.
D. It is a chemoreceptor.
E. All above are wrong.

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99% of area under standard normal curve lies between______ of the mean. ()

A. 1 SD
B. 1.96SD
C. 2.58SD
D. 1.64SD
E. 1.28 SD

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In paired t test, the Ha should be:()

A. μ=μ0
B. μ≠μ0
C. μ1=μ2
D. μd≠0
E. μd=0

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If n1=10 and n2=11, the d.f. in the t test for two independent means should be:()

A. 10
B. 19
C. 11
D. 1
E. 21

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Statistical inference includes:()

A. central tendency and dispersion
B. t test and z test
C. estimation and hypothesis testing
D. distribution and sampling error
E. discrete and continuous

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Concerning the carotid sinus, the right description is ()

A. It is a dilatation at the posterior wall of the common carotid artery. B. It is a dilatation at the point of the bifurcation of the common carotid artery. C. It is a small ball structure behind the point of division of the common carotid artery. D. It is a chemoreceptor. E. All above are wrong.

99% of area under standard normal curve lies between______ of the mean. ()

In paired t test, the Ha should be:()

If n1=10 and n2=11, the d.f. in the t test for two independent means should be:()

Statistical inference includes:()

A. It is a dilatation at the posterior wall of the common carotid artery.
B. It is a dilatation at the point of the bifurcation of the common carotid artery.
C. It is a small ball structure behind the point of division of the common carotid artery.
D. It is a chemoreceptor.
E. All above are wrong.