[amp_mcq option1=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}$$” option2=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} + {n_2}}}{{{n_1} – {n_2}}}} $$” option3=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} – {n_2}}}{{{n_1} + {n_2}}}} $$” option4=”None of these” correct=”option2″]<\/p>\n
The correct answer is: B. $t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} + {n_2}}}{{{n_1} – {n_2}}}} $<\/strong><\/p>\n The formula for the t-test for the difference of two means is:<\/p>\n $$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} + {n_2}}}{{{n_1} – {n_2}}}} $$<\/p>\n where:<\/p>\n The t-test is a statistical test that is used to compare the means of two groups. It is a parametric test, which means that it assumes that the data are normally distributed. The t-test can be used to test for a difference in means between two groups, or to test for a difference in means between two groups after adjusting for covariates.<\/p>\n The t-test is a powerful test, but it is important to note that it is sensitive to the assumption of normality. If the data are not normally distributed, the t-test may not be accurate.<\/p>\n The t-test is a versatile test that can be used in a variety of settings. It is a common test that is used in many fields, including statistics, psychology, and medicine.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}$$” option2=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} + {n_2}}}{{{n_1} – {n_2}}}} $$” option3=”$$t = \\frac{{\\overline {{x_1}} – \\overline {{x_2}} }}{S}\\sqrt {\\frac{{{n_1} – {n_2}}}{{{n_1} + {n_2}}}} $$” option4=”None of these” correct=”option2″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[701],"tags":[],"class_list":["post-33807","post","type-post","status-publish","format-standard","hentry","category-business-statistics-and-research-methods","no-featured-image-padding"],"yoast_head":"\n\n