-10(1-9x) +6(x-10)
-10+90x+6x-60
96x-70
so d is the answer
i can't tell you the answer, but i will teach you how to get it!!
first you convert it to a fraction, then you make it a decimal divide the top number by the bottom number, then you move the decimal two places to the right --> and add a percent symbol %
Using it's concept, it is found that there is a 0.8 = 80% probability that the learner is a senior or a male.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
In this problem, there is a total of 6 + 4 + 5 = 15 students. Of those, there are 6 seniors, and 6 male non-seniors, hence there are 12 desired outcomes, and the probability is given by:
p = 12/15 = 0.8 = 80%.
More can be learned about probabilities at brainly.com/question/14398287
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Answer:
Step-by-step explanation:
Given is a list of prices in dollars for one night at different hotels in a certain region
To find range, variance and std deviation.
Mean 155.75
Standard Error 23.80782434
Median 150
Mode #N/A
Standard Deviation 67.33869616
Sample Variance 4534.5
Kurtosis -1.593759971
Skewness 0.344624422
Range 172
Minimum 86
Maximum 258
Sum 1246
Count 8
Thus we find range = 172 $. This gives an idea about the lowest and highest difference.
Variance = Average of squares of deviations from the mean= 4533.329 $^2gives us an idea about the dispersion of data. This helps to have an idea about the price rise or low in different hotels
Std deviation is square root of variance 67.33 $ shows an idea about the dispersion and also coefficient of variation as a ratio of mean to std deviation.
