Question

and the con t e n t of the cand these resom a population with a meangal to 60 seconds A group of students estimated the length of the reference to a watch Does tipear tushaders are conably good testing one .de 71 641 3922 57 63 64 51 467 50 What are the landmative poses? OBH OD H H 60 seconds 160 seconds ? seconds o second OA H =50 seconds H 60 seconds OCH 60 second H 60 seconds Determine the best static Round to two decal places and Delete Hound towe domac ed State the tracondon th e se theorginal evidence to conduct the dam the mean the population of s e conds "correct that as a group the students are only good at e ang one Coto

Answer 1

The hypotheses are

$H_0:\mu=60 seconds$

$H_1:\mu\neq60 seconds$

The test statistic is t = x(bar)- mu /s/√n

t= 62.27-60/19.65/√15 = 0.447

p value is 0.662

The conclusion is

Fail to reject H₀.There is sufficient evidence to conclude that the original claim that the mean of population of estimation is 60 seconds is correct.It shows that the as a group the students are reasonably good at estimating one minute .