Answer:
4
Step-by-step explanation:
P(white) = 24/120
set up a proportion based on these results:
24/120 = x/20
cross-multiply:
120x = 480
x = 4
let X equal initial string length
X / 16 = 7.3
X = 7.3 * 16
X = 116.8
The following statement
'In general, men who took drug x maintained or increased the number of visible scalp hairs; while scalp hairs counts in men who took the placebo continued to decrease'
can be referred as descriptive statistics, since we are saying that the msot of the men who took the drug gain scalp hairs while the contrary happened from those men who took placebo.
On the other hand, the statement
'drug x is effective in maintaining or increasing the amount of scalp hair in men'
Is a deduction you make, so it can be referred as inferential statistics
Answer:
The null and alternative hypothesis is 
and 
respectively.
Step-by-step explanation:
Consider the provided information.
If there is no statistical significance in the test then it is know as the null which is denoted by 
, otherwise it is known as alternative hypothesis which denoted by 
.
Consider the statement:
Test to see whether the mean tree planting time differ from two hours.
The null hypothesis is:
Therefore, the alternative hypothesis is:
Thus, the null and alternative hypothesis is and respectively.
