I am trying to answering this question R, but I keep getting the following error when I run my line of code.

Intelligence is numerical

antennae is categorical

"Error in if (stderr < 10 * .Machine$double.eps * abs(mx)) stop("data are essentially constant") :

missing value where TRUE/FALSE needed

In addition: Warning message:

In Ops.factor(x, y) : '-' not meaningful for factors

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# Question 4.use a two-sample t test to determine whether there is

# a significant difference in intelligence between aliens with curly

# and straight antennae.What is the null hypothesis, and do you reject it?

# What is the p-value? (3 points)

t.test(my_sample$intelligence,my_sample$antennae, alternative = "two.sided", mu = 0, paired = T)