Assume that you have a sample of n 1 equals 8n1=8, with the sample mean Upper...
Assume that you have a sample of n 1 equals 8n1=8, with the sample mean Upper X overbar 1 equals 49X1=49, and a sample standard deviation of Upper S1=4, and you have an independent sample of 2=12 from another population with a sample mean of Upper X overbar 2=39 and the sample standard deviation Upper S2=8. Complete parts (a) through (d) below.
a. What is the value of the pooled-variance tSTAT test statistic for testing Upper H 0 : mu 1 equals mu 2H0: μ1=μ2?
Homework Answers
| x1 = | 49.00 | x2 = | 39.00 |
| s1 = | 4.00 | s2 = | 8.00 |
| n1 = | 8 | n2 = | 12 |
| Pooled Variance Sp2=((n1-1)s21+(n2-1)*s22)/(n1+n2-2)= | 45.3333 (please take care of decimals required() | |||
| standard error se =Sp*√(1/n1+1/n2)= | 3.0732 | ||
| test stat t =(x1-x2-Δo)/Se= | 3.254(please take care of decimals required() | ||
| p value : = | 0.0044(please take care of decimals required() | ||
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