Answer:
23346.5
Step-by-step explanation:
add them together and divide by 2
Answer:
The z-score when x=187 is 2.41. The mean is 187. This z-score tells you that x = 187 is 2.41 standard deviations above the mean.
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 question:

The z-score when x=187 is ...

The z-score when x=187 is 2.41. The mean is 187. This z-score tells you that x = 187 is 2.41 standard deviations above the mean.
Sequence 1 is arithmetic because it is being subtracted by 16.
Sequence 2 is geometric because it is being divided by 2.
Arithmetic is when you're adding or subtracted and geometric is when you multiplying or dividing.
6.15x = 123
123 ÷ 6.15 = 20
x = 20 hours.
Answer:
see picture
Step-by-step explanation: