Test value for difference between effectiveness

Assignment Help Basic Statistics

Reference no: EM1318363

Q1) Find out value of α as shown in figure below, if degrees of freedom were seven and nine.

A) 0.1

B) 0.01

C) 0.025

D) 0.05

Q2) A pharmaceutical company is testing effectiveness of new drug for lowering cholesterol. As part of this trial, they want to find out whether there is a difference between effectiveness for women and for men. At = .05, what is the test value?

	Women	Men
Sample size	40	70
Mean effect	7	6.75
Sample variance	2.5	4.5

A) 0.70

B) 1.97

C) 0.36

D) 1.42

Q3) In testing equality of two means below, find out the test statistic? (Use the unequal variances formula)

	Sample 1	Sample 2
Sample size	9	12
Sample mean	80	115
Sample variance	550	100

A) -4.20

B) -2.31

C) -0.18

D) -0.50

Reference no: EM1318363

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