Answer:
60
Step-by-step explanation:
Because 30 is half of 60
Hope this helps. Pls give brainliest.
Answer:
93.32% probability of obtaining a value less than or equal to -7.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
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.
In this problem, we have that:

What is the likelihood of obtaining a value less than or equal to -7?
This is the pvalue of Z when X = -7.
So




has a pvalue of 0.9332.
So there is a 93.32% probability of obtaining a value less than or equal to -7.
Since we have 2 zeros we can take them off and add them back on when we are done.
5 goes into 45 9 times.
now lets add the two zeros back on
900
5 goes into 4500 900 times
Im not sure how correct this is but this is my best try, apologies for bad handwriting