Open Wages-HW9 data. Test if people with 16 years of EDUCATION and people with 12 years of EDUCATION have wages that are significantly different on average. Answer questions 5 to 8.5. What test did you perform? (6.25 points)a. Simple Regressionb. Multiple Regressionc. Two sided t-testd. None of these

Correct option: (c). Two sided t-test.

Step-by-step explanation:

A test is to be performed to determine whether the people with 16 years of education and 12 years of education have wages that are significantly different on average.

A sample is provided for the wages of people in both the category.

Compute the sample mean and sample standard deviations for both the sample using the formulas:

The hypothesis is:

H₀: The wages of the two groups is not different, i.e. μ₁ = μ₂.

Hₐ: The wages of the two groups is not different, i.e. μ₁ ≠ μ₂.

A test for the difference between two means is to be performed.

Since there is no information about the population standard deviations, use a t-test for the difference between two means.

Thus, the correct option is (c). Two sided t-test.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

c

step-by-step explanation: