Answer:
Step-by-step explanation:
a. The hypotheses are:
Null hypothesis: the average test scores are the same for the different teaching methods.
Alternative hypothesis: the average test scores are different for the different teaching methods.
b. To determine the degree of freedom for the F test: we must find two sources of variation such that we have two variances. The two sources of variation are: Factor (between groups) and the error (within groups) and add this up. Or use (N - 1). N is number in sample
c. With a p value of of 0.0168 and using a standard significance level of 0.05, we will reject the null hypothesis as 0.0168 is less than 0.05 and conclude that the average test scores are different for the different teaching methods.
Answer:
Step-by-step explanation:
True
Answer:
7 : 7 : 12 am
Step-by-step explanation:
This question pretty much requires us to obtain the lowest number that is common to all three times. The qay to obtain this is by finding the LCM of all three numbers.
This is given as;
48 = 2 × 2 × 2 × 2 × 3
72 = 2 × 2 × 2 × 3 × 3
108 = 2 × 2 × 3 × 3 × 3
The LCM is = 2 × 2 × 2 × 2 × 3 × 3 × 3 = 432 seconds.
Converting to minutes by dividing by 60, the time is = 432 ÷ 60 min = 7 min 12 sec
The next time they would change simultaneously is; 7am + 7 min 12 sec = 7 : 7 : 12 am
60v = $15
60v/60 = $15/60
v = 0.25
The original value of the baseball card is $0.25
