He won about 25% because 6/12 would be 1/2 and 3 is 1/2 of 6 or a 1/4 so 25%
Answer:
Step-by-step explanation:
From the attached photo
mean = 15.76
Standard deviation = 1.66
c) We want to determine a 90% confidence interval for the mean growth of pea plants
For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean ± z ×standard deviation/√n
It becomes
15.76 ± 1.645 × 1.66/√7
= 15.76 ± 1.645 × 0.63
= 15.76 ± 1.04
The lower end of the confidence interval is 15.76 - 1.04 =14.72
The upper end of the confidence interval is 15.76 + 1.04 =16.8
1 meter is 1000 mm
1—— 1000
x——6325
you divide 6325 and 1000 and get
6,325 m
Find a common denominator (which is 12). 10 1/4 tons becomes 10 3/12 tons or 123/12 tons. They fed 2 1/3 tons or 2 4/12 (28/12) tons to the animals. Subtracting the amount fed (28/12 tons) from the total amount (123/12 tons), the amount left is 95/12 tons, or 7 11/12 tons.