We (u 4. (2 pts.) Suppose you conduct an experiment with 20 subjects and the tob
ID: 2932609 • Letter: W
Question
We (u 4. (2 pts.) Suppose you conduct an experiment with 20 subjects and the tobe turns ount 0.69, which is not statisticaly significant. What is the correct way to report your res Peject Ho. to be APA format? 5. (8 total pts.) Using the following data, compute the f-statistic. Show each step of your work Use a known population mean of 20, a one-tailed test in the upper tail, and -0.05- 22 19 23 26 18 2221 31 30 25 20 24 25 23 (1 pt.) Write your hypotheses. a. b. (I pt.) Calculate the mean. c. (I pt.) Calculate the estimated population variance.Explanation / Answer
5.
Given that,
population mean(u)=20
sample mean, x =23.5
standard deviation, s =3.757
number (n)=14
null, Ho: =20
alternate, H1: >20
level of significance, = 0.05
from standard normal table,right tailed t /2 =1.771
since our test is right-tailed
reject Ho, if to > 1.771
we use test statistic (t) = x-u/(s.d/sqrt(n))
to =23.5-20/(3.757/sqrt(14))
to =3.486
| to | =3.486
critical value
the value of |t | with n-1 = 13 d.f is 1.771
we got |to| =3.486 & | t | =1.771
make decision
hence value of | to | > | t | and here we reject Ho
p-value :right tail - Ha : ( p > 3.4857 ) = 0.00201
hence value of p0.05 > 0.00201,here we reject Ho
ANSWERS
---------------
a.
null, Ho: =20
alternate, H1: >20
b.
given data,
Mean of the data=(22+19+23+26+18+22+21+31+30+25+20+24+25+23)/14
= 23.5
c.
variance = (standard deviation)^2 = (3.757)^2
= 14.1150
d.
stanadard error = sd/ sqrt(n)
where,
sd = standard deviation
n = sample size
standard error = ( 3.757/ sqrt ( 14) )
= 1.004
e.
test statistic: 3.486
f.
critical value: 1.771
g.
decision: reject Ho
p-value: 0.00201
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