Answer:
At least 6907 people.
Step-by-step explanation:
Population std deviation = sigma= 10.6
Since population std deviation is known, we can use normal probability table to get sample size from confidence interval.
The sample mean weight loss is within 0.25 lb of the true population mean.
Hence margin of error < 0.25
Margin of error = z critical (std dev/n) where n = sample size
Z critical for 95% = 1.96
Hence 0.25 >1.96(10.6)/sq rt n
Simplify to get
sq rt n > 1.96(10.6)/0.25 = 83.104
Square both the sides to get
n > 83.104 square = 6906.27
i.e. sample size should be atleast 6907.
A) is 2.5 x 10^4
B) is 8.1 x 10^3
C) is 90.6 x 10^6
D) is 10.34 x 10^7
Sorry if I’m wrong, x
Answer:
1/2
Step-by-step explanation:
Calculator :)
Answer:
y=2x
Step-by-step explanation:
y=mx+b
If it crosses through the point (0,0) it means that the y intercept (b) is 0.
m=slope
Not sure how to show you the graph but it is simply a diagonal line through (0,0) that will hit (1,2), (2,4), etc.
The y-intercept is the y value of an equation on a graph or cordinate grid For example y=mx+b, b would be the y-intercept. Another example, y=2x-2, -2 would be the y-intercept and you would place a point on -2 and go up 2 right 1 because of the slope 2. I hope this helps you to better understand the y-intercept.
