Arandom sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. we want to determine if the average age of all the students at the university is significantly more than 24. assume the distribution of the population of ages is normal. the p-value is between
(a) .005 to .01
(b) .01 to .025
(c) .025 to .05
(d) .05 to .10

P value is  =  0.0228

option b is correct .01 to .025

Step-by-step explanation:

given data

sample n = 16 students

mean  = 25 years

standard deviation SD = 2 years

to find out

p-value

solution

first we find value of Z that is

Z = mean +  ( 1 - mean ) / (SD /√n)

put all value

Z = 25 - 24 / (2 /√16)

Z = 2

so p value for P(Z 2.0 ) from Z table

P value is  =  0.0228

so option b is correct

answer: 1+1

step-by-step explanation: 1+1 is at least 2

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.