Answer: For part I, the probability is 36.69% that the average weight will be less than 234.
To find the percents for each one, you need to find the z-score and use a normal distribution table. A z-score is the number of standard deviations above or below the mean.
For 234, the z-score would be: (234 - 245.7) / 34.5 = -0.34 which corresponds to a percent of 36.69%.
For that last 2 parts, you follow the same plan. However, you will find two different percents. You will have to subtract them to find the percent between them.
For Part II, you should get 6.85%
For Part III, you should get 10.37%.
It is c. If you do the equation it is -1 1/4
Answer:
22 people were born in the uk (66 ÷ 360) × 120=22
Step-by-step explanation:
A)
Replace the letters in the given equation with the corresponding values given in the problem:
A = 10,000 x 2.718^(0.05 x 2)
A = 11,051.59 , rounded to nearest dollar = $11,052
B)20,000 = 10000 x 2.718^(0.05 x t)
Divide both sides by 10,000:
2 = 2.718^(0.05 x t)
Apply exponent rules:
0.05tln(2.718) = 2
Solve for t:
t = ln(2) / 0.05ln(2.718)
t = 13.86 years, rounded to nearest year = 14 years.
