He fourth one: 4,5,6,7,8...if it has those two bars || it means absolute value which basically means if its negative you just change it to a posotive :)
Answer:
5 laps per day
Step-by-step explanation:
30 laps divided by 6 days gives you 5 laps per day.
Answer:
made a mistake in step 3
Step-by-step explanation:
from step2; 1/3k=15 then making k the subject ,k=15*3 so the value of k will be 45
Answer:
14 dollars
Step-by-step explanation:
14÷2= 7
7+5=12
Answer:
1. a. z test for means and t test for means.
2. C. HA : mu1 - mu2 > 0
Step-by-step explanation:
Hypothesis testing is used in a situation where there are more than 1 alternative available. The t test is conducted in the mean which determines the t value and then this value is compared with p value to identify the situation whether to accept or reject the null hypothesis. The alternative hypothesis in this situation is is represented by mu.
