The diameter of a circle is 38 in. What is the circumference of the circle? (Use = 3.14.)
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Answer:
Idonna's standardized score is 1.41.
Jonathan's standardized score is 0.55.
A.) Idonna's score is higher than Jonathan's
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.
Idonna scored 671 on the mathematics part of the SAT. The distribution of SAT math scores in that year was Normal with mean 509 and standard deviation 115.
This means that her standardized score is Z when . So
Idonna's standardized score is 1.41.
Jonathan took the ACT and scored 24 on the mathematics portion. ACT math scores for the same year were Normally distributed with mean 21.1 and standard deviation 5.3 .
This means that his standardized score is Z when
Jonathan's standardized score is 0.55.
Due to the higher z-score, Iddona's has a higher score.
Looks like your function is
Rewrite it as
Recall that for , we have
If we replace with
, we get
By the ratio test, the series converges if
Solving for gives the interval of convergence,
We can confirm that the interval is open by checking for convergence at the endpoints; we'd find that the resulting series diverge.