Answer:
Step-by-step explanation:
For the null hypothesis,
H0 : p = 0.63
For the alternative hypothesis,
Ha : p < 0.63
This is a left tailed test
Considering the population proportion, probability of success, p = 0.63
q = probability of failure = 1 - p
q = 1 - 0.63 = 0.37
Considering the sample,
Sample proportion, P = x/n
Where
x = number of success = 478
n = number of samples = 800
P = 478/800 = 0.6
We would determine the test statistic which is the z score
z = (P - p)/√pq/n
z = (0.6 - 0.63)/√(0.63 × 0.37)/800 = - 1.76
From the normal distribution table, the area below the test z score in the left tail 0.039
Thus
p = 0.039
the ratio in which 42 should be divided is 1:2:3
the sum of the parts of the ratio is - 1 + 2 + 3 = 6
this means that there's a sum of 6 parts
so we need to find how much 1 part is equivalent to
if 6 parts are equivalent to 42
then 1 part is equivalent to - 42/6 = 7
so the ratio should be 1:2:3
1 part - 7
2 parts - 7 x 2 = 14
3 parts - 7 x 3 = 21
therefore 42 divided into 1:2:3 ratio is as follows
7 : 14 : 12
Answer: 5.75
Step-by-step explanation:
3/4=.75 then add the 5
Answer:
Step-by-step explanation:
Let's assume this is a function
<u>The points are</u>
<u>Since it is linear relation, we'll get the slope intercept form</u>
- g = ms + b, where g- number of gallons, s- time in seconds, b- y intercept
<u>Using the points, let's calculate the formula</u>
- m = (10 - 13)/(60 - 40) = -3/20
- 10 = -3/20*60 + b
- 10 = - 9 + b
- b = 19
<u>So the formula is:</u>
