Answer:
Since , the difference is significant.
Step-by-step explanation:
Z-score:
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
If |Z| > 2, the measure X is significent.
In this question:
So
Since , the difference is significant.
Answer:
x = 9, WX = 34
Step-by-step explanation:
Two tangent segments to a circle from the same external point are congruent, that is
WX = YX, substitute values
7x - 29 = 2x + 16 ( subtract 2x from both sides )
5x - 29 = 16 ( add 29 to both sides )
5x = 45 ( divide both sides by 5 )
x = 9
Thus
WX = 7x - 29 = 7(9) - 29 = 63 - 29 = 34
Answer:
i do not know
Step-by-step explanation:
well first off u didn't give the graph at all which makes it impossible to answer.
I know that the answer is y! I hope it’s right