Answer:
This is a english server-
Step-by-step explanation:
6? I believe, I’m sorry if this didn’t help
The amount of carrots they each ate are the same because 12 is a multiple of 4. There are 3 4’s in one 12. If you multiply 1/4 times 3 you will get 3/12 because 1 x 3 = 3. And 4 x 3 = 12
Answer:
System of equations:
20x + 30y = 650
x + y = 25
Time underwater = 10 hours
Time at the surface = 15 hours
Step-by-step explanation:
Let x = time underwater at 20 km/h.
Let y = time on the surface at 30 km/h.
speed = distance/time
distance = speed * time
distance underwater: 20x
distance on the surface: 30y
total distance: 650
20x + 30y = 650
total time: x + y
total time: 25
x + y = 25
20x + 30y = 650
x + y = 25
20x + 30y = 650
-20x - 20y = -500
--------------------------------
10y = 150
y = 15
x + y = 25
x + 15 = 25
x = 10
Answer:
95% confidence interval for nasturtiums in a 50 gram bag is (1.442, 1.700)
Step-by-step explanation:
The sample is:
1.45g, 1.35g, 1.45g, 1.65g, 1.72g, 1.45g, 1.35g, 1.92g, 1.76g, and 1.61g.
Sample size is 10
Mean nasturtiums in a 50 gram bag is ![\frac{1.45g+1.35g+ 1.45g+ 1.65g+ 1.72g+ 1.45g+ 1.35g+ 1.92g+ 1.76g+1.61g }{10} =1.571 g](https://tex.z-dn.net/?f=%5Cfrac%7B1.45g%2B1.35g%2B%201.45g%2B%201.65g%2B%201.72g%2B%201.45g%2B%201.35g%2B%201.92g%2B%201.76g%2B1.61g%20%7D%7B10%7D%20%3D1.571%20g)
Standard deviation of the sample is the mean of the squared differences from the mean(0.181)
95% Confidence Interval can be calculated using M±ME where
- M is the mean nasturtiums in a 50 gram bag (1.571 g)
- ME is the margin of error from the mean
And margin of error (ME) can be calculated using the formula
ME=
where
- t is the corresponding statistic in the 95% confidence level and 9 degrees of freedom (2.262)
- s is the standard deviation of the sample (0.181)
- N is the sample size (10)
Then ME=
=0.129
95% confidence interval for nasturtiums in a 50 gram bag is 1.571±0.129