Answer:
i know a good trick on how to do this.
Step-by-step explanation:
The number 4 is apart of the sequence, but it has been taken away by 3.
3+4=7. Since it was taken away by 3, we have to add 7 by 3 to get 9. So on and so forth.
2/3, 9/16, 0.52
Answer: C) a bell-shaped curve, better known as a normal distribution
Step-by-step explanation:plato only
Answer:
Explained
Step-by-step explanation:
Null hypothesis is something that states that there is no difference between the population means, while the alternative hypothesis states that there is difference between the two.
So, If the difference of the sample means is 10cm, and the standard deviation of the difference of sample means is 6 cm. Then the population means of the two districts will be different according to the manual solution.
Answer:
The population means of the two districts are different.
Step-by-step explanation:
B. length=12, width=18
C. length=18, width=24
D.length=24, width=18
Answer: B. length=12, width=18
Step-by-step explanation:
Let x = Length of the playground then width = x+6
Area of a rectangular playground = Length x width
Since , area of playground =
Then , we have
But length cannot be negative , so reject x= -18 .
Thus , the length of playground = 12 yd
Then , width = 12+6 = 18 yd
Hence, the correct answer is B. length=12, width=18