Start learning 50% faster. Sign in now
In R, the t.test() function is used to perform a t-test, which compares the means of two independent groups (samples) to determine if there is a statistically significant difference between them. The t.test() function is versatile and can perform both one-sample and two-sample t-tests. It also provides useful outputs, such as p-values and confidence intervals, to evaluate hypothesis tests for means. Why Other Options Are Wrong : B) anova() : ANOVA is used for comparing the means of more than two groups, not two independent samples. C) lm() : The lm() function is used for linear modeling (regression), not hypothesis testing of means. D) cor.test() : This function is used to test the correlation between two variables, not for comparing sample means. E) chisq.test() : The Chi-squared test is used for categorical data and tests the relationship between observed and expected frequencies, not for comparing means.
Which individuals have received the "Order of White Eagle" from Poland in April 2023?
When the annual Union Budget is not passed by the Lok Sabha,
When 135 is added to 3A7, the result is 4B2. 4B2 is divisible by 3. What is the largest possible value of A?
A and B are travelling towards each other with a speed of 30 km/hr and 40 km/hr. They started at same time and A covered 35 km less distance than B befo...
The seed multiplication ratio of rapeseed, red gram, hybrid maize, sorghum and jute is:
Earth day is celebrated on every 22nd April related with
Which of the following statements is/are correct regarding the “Employees’ pension scheme”?
I. The EPS, administered ...
All 72 students of a class are standing in a row facing the north. Shalabh is standing at the extreme left end of the row. Only 8 students are standing ...
Five friends A, B, C, D, and E are sitting in a straight row, facing north. A is not at the exact centre position of the row. C is second from one extre...
1600 metres long train crosses a man who is moving in the same direction with a certain speed, in 16 seconds. If the same train can cross a tree in 10 s...