Question

1. Calculate the t-value for a t-test (2 dp) on the chol.csv data with the correct null hypothesis from the lab test exercise.

2. What is the correct alternative hypothesis for the chol.csv data in the lab test exercise?

Select one:

a. The difference in mean patient cholesterol level between days two and four will not differ significantly from 0.

b. Mean patient cholesterol level on day four will differ significantly from mean patient cholesterol level on day two.

c. Mean patient cholesterol level on day four will differ significantly from 0.

d. Mean patient cholesterol level on day four will not differ significantly from mean patient cholesterol level on day two.

chol.csv

day_2	day_4
270	218
236	234
210	214
142	116
280	200
272	276
160	146
220	182
226	238
242	288
186	190
266	236
206	244
318	258
294	240
282	294
234	220
224	200
276	220
282	186
360	352
310	202
280	218
278	248
288	278
288	248
244	270
236	242

Answer 1