Answer:
630
Step-by-step explanation:
15×2=30
40×(-15)=-600
30-(-600)=630
Answer:
Both means are apprxoimately equal at 1% level of significance.
Step-by-step explanation:
Given is the information summarised below
Group Men Women
Mean 23.00 28.00
SD 5.00 10.00
SEM 1.00 1.83
N 25 30
H0: Mean of mean = mean of women
Ha: means of men < mean of women
(Left tailed test)
Since population std deviation is known but sample sizes are small t test is used.
The mean of Men minus Women equals -5.00
standard error of difference = 2.201
t = 2.2721
df = 53
p value= 0.0136
since p >0.01 at 1% significance level we fail to reject H0.
Both means are apprxoimately equal at 1% level of significance.
Answer:
Step-by-step explanation:
The computation of the fractions of the students wearing either a white shirt or blue shirt is as follows:
Hence, the fractions of the students wearing either a white shirt or blue shirt is
Answer:
6 apples because
Step-by-step explanation:
12÷2=6
