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thegent3473
21.06.2021 •
Mathematics
Emile has calculated a one-tailed z-statistic of -1.97 and wants to see if it is significant at the 5% significance level. What is the critical value for the 5% significance level? Answer choices are rounded to the hundredths place.
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Ответ:
Z = -1.65
Step-by-step explanation:
Z-score:
In a set with mean
and standard deviation
, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.
What is the critical value for the 5% significance level?
One-tailed statistic, so Z with a p-value of 0.05.
Looking at the z-table, this is Z = -1.65, so this is the critical value for the 5% significance leve.
Ответ:
explanation: to find the volume of both cakes we must multiply length•width•height
2•8•12=192
3•12•18=648
the simplest form of 192 to 648 is 8/27 therefor the answer ratio of small cakes to large cakes is A
let me know if i’m wrong