A friend is tested to see whether he can tell bottled water from tap water. There are 60 trials (half with bottled water and half with tap water), and he gets 39 right. a. Determine the null hypothesis. b. Determine the alternative hypothesis.

don't know what that says sorry i can't you

step-by-step explanation:

idk what it says

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for