The equal-variances test statistic of is Student t-distributed with n1 + n2 degrees of freedom,provided that the two populations are normal.
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Q16: Both the equal-variances and unequal variances test
Q17: The variance of Q18: In testing the difference between the means Q19: Two independent samples of sizes 20 and Q20: When the sample sizes are equal,the pooled Q21: Two independent samples of sizes 40 and Q22: In testing the difference between two population Q25: When two population variances are _ we Q26: A political analyst in Hawaii surveys a Q38: A political analyst in Iowa surveys a
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