Answer:
The Standard Deviation
Step-by-step explanation:
Your concentration should be on what the standard deviation tells us about the data. The standard deviation is a number which measures how far the data are spread from the mean. Let a calculator or computer do the arithmetic. The standard deviation, s or σ , is either zero or larger than zero.
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Answer:
Step-by-step explanation:
a. To identify the alternative hypothesis, we have to examine the claim
The claim is that the mean nickel diameter drawn by children in the low income group is greater than 21.21 mm
Thus, alternative hypothesis is μ > 21.21
b. The test statistics is
z score = x - u /(sd/√n)
Where x (sample mean) is 23.375, u is pop. mean is 21.21, sd is 5.29 and n (sample size) is 40
z = 23.375 - 21.21 /(5.29/√40)
z = 2.165 / (5.29/6.3246)
z = 2.165/0.8364
z = 2.588
c. The critical value is
Alpha for this case study is 0.01. Then the critical probability is 1 - (alpha/2) =
1 - (0.01/2) = 1 - 0.005 = 0.995
To express the critical value as a z score, find the z score corresponding to the critical probability using the z table. Which is 0.8389.
Answer:
all you have to do is graph them but put them in y=mx+b form first, the coordinates is the solution
Answer:
2
Step-by-step explanation:
When you plug in 3 for the value of x you get the equation: 4(3)-2/5 (being divided by 5)
Now we solve the top and the bottom of the fraction.
4×3=12
12-2=10
10/5= 2
Hope this helps! :)
When x=-2 the value of the function is 0.
When x=0 the value of the function is -4.