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Answer:
The predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.
Step-by-step explanation:
The least square regression line is used to predict the value of the dependent variable from an independent variable.
The general form of a least square regression line is:
Here,
<em>y</em> = dependent variable
<em>x</em> = independent variable
<em>α</em> = intercept
<em>β</em> = slope
The regression line to predict the life expectancy of men in a country from the life expectancy of women in that country is:
Compute the life expectancy of men in a country in which the life expectancy of women is 70 years as follows:
Thus, the predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.
Answer: 57 min
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Answer:
a) 0.1587
b) 0.023
c) 0.341
d) 0.818
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 515
Standard Deviation, σ = 100
We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.
Formula:
a) P(score greater than 615)
P(x > 615)
Calculation the value from standard normal z table, we have,
b) b) P(score greater than 715)
Calculating the value from the standard normal table we have,
c) P(score between 415 and 515)
d) P(score between 315 and 615)