Statistical Analysis and Hypothesis Testing Assignment

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Statistical Analysis and Hypothesis Testing Assignment1.Which of the following are dependent samples:(a) older siblings; younger siblings (matched pairs of siblings)(b) before; after(c) sample from FA; sample from FB ( both randomly chosen)(d) age of patients: older sample; younger sample (both selected at random)2.Which of the above are independent samples:(a) older siblings; younger siblings (matched pairs of siblings )(b) before; after(c) sample from FA; sample from FB ( both randomly chosen)(d) age of patients: older sample; younger sample (both selected at random)3. A study is done of accidentscomparingtwo cities by sampling and finding the mean number of accidentsper day. State the Null Hypothesis.H0: There is no significant difference between the mean number of accidents per day in the two cities.4. Calculate the standard error if two samples sizes n1=25, n2=19, and standard deviations of the sampleswere s1= 3.1, s2=4.2.222212123.14.2Standard error1.152519ssnn5. Calculate the correct test statistic for the following scenarios:a)x115.97,x219.05,n124,n214,13.62,24.19122222121215.9719.052.303.624.192414xxznn b)x115.97,x218.95,n125,n215,s13.60,s24.29122222121215.9718.952.2563.604.292515xxtssnn c)s113.9,n129,s29.9,n21822122213.91.9719.9sts

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