Answer:
The blue liquid is toxic
Step-by-step explanation:
From the calculations I have done and attached to this problem
Null hypothesis:
H0 : p1 <= p2
Alternate hypothesis:
H1 : p1 > p2
^p1 = 0.925
^p2 = 0.2250
^P = (x1 + x2)/(n1+n2)
= 0.575
After calculating, I got test statistics = 6.33 ( check attachment)
P(z > 6.33) = 0.0000
In conclusion, our pvalue has been found to be less than the level of significance 0.05 so we reject null hypothesis and accept that we have enough sample evidence that the blue liquid is more toxic in comparison to white one.
Please check attachment for calculated test statistics.
Answer:
C, D
Step-by-step explanation:
1/5 is .20 which is 20%
4/20 is equal to 1/5 which is 20%
Hope this helps
4 grams sample will be left after 1 year
Step-by-step explanation:
The decay function for percentage decay is given by:

Here,
a is the initial value
r is the rate
x is the number of time periods
Given
Initial value = 100 grams
Rate = 6% = 0.06
Time = 1 year = 52 weeks
Putting the values in the formula

Hence,
4 grams sample will be left after 1 year
Keywords: Decay, percentage
Learn more about decay functions at:
#LearnwithBrainly
Answer:
the 3rd one it is the best answer here
Money paid by Park Jimin = $125
We need to find the tip , so,
→ 15% of the amount paid
→ $ 125 (15/100)
→ $ 18.75
Hence, the tip is of $ 18.75