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brattymoo1009
27.08.2019 •
Mathematics
Suppose the counselor found the sum of squared deviations from the mean (of the change scores) of the sample to be 135. given that he tested 10 people, what would the estimated population variance be?
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Ответ:
13.5
Step-by-step explanation:
Sum of squared deviation = 135
Variance is defined as the Sum of the Squared Deviations from the mean divided by the number of terms.
Since, we have to find the population variance we will divide the sum of squared deviation by N which is 10 in this case. For the variance of a sample, the sum of squared deviations is divided by (N - 1).
Therefore, the estimated population variance would be:
Ответ:
S(x) = 0.046x + 0.018(1000-x)
Step-by-step explanation:
Given that:
A fund rate: 4.6% = 0.046
Saving account rate: 1.8% = 0.018
Let x is the amount Jacy invest in the fund so (1000-x) is the amount he invests in the savings account
So a polynomial function S(x) to represent the interest Jacy will earn in 1 year is:
S(x) = 0.046x + 0.018(1000-x)
Hope it will find you well.