Answer: The value of test statistic is 0.696.
Step-by-step explanation:
Since we have given that

Similarly,

At 0.01 level of significance.
Hypothesis are :

So, the test statistic value would be

Hence, the value of test statistic is 0.696.
Answer: 4/10
Explanation: 9/10 - 5/10 = 4/10
The denominator is already both 10 so u can subtract the numerator without worry
Answer:
A
Step-by-step explanation:
The equation y =1, means that y is one for any value of x. Therefore you will get a straight horizontal line that goes through (-1,1) (0,1), (1,1), (2, 1) etc.. It will be parallel to the y-axis, but one unit up, as I have tried to illustrate below:
^
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| y = 1
<------------------------------------------>
| x-axis
<---------------------------------------------->
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I think the answer would be 4.1 because the balloon is 4 kilometers, and 1 kilometer from the station. Put them together and you get 4.1 This answer may OR may not be correct, but I am sure this is the answer.