Answer:
Age and weight in babies
Explanation:
The doctors check this everytime a baby is born.
Answer:
95% confidence interval is (104.2, 111.8)
Explanation:
Mean = 108, sd = 17, n = 81, degree of freedom = n-1 = 81 - 1 = 80. t-value corresponding to 80 degrees of freedom and 95% confidence level is 1.990
Confidence Interval = Mean + or - Error margin
Error margin (E) = (t×sd)/√n = (1.990×17)/√81 = 33.83/9 = 3.8
E = 3.8
Lower bound = mean - E = 108 - 3.8 = 104.2
Upper bound = mean + E = 108 + 3.8 = 111.8
95% confidence interval is (104.2, 111.8)
Explanation:
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Answer:
A. 3.82
Explanation:
First, find the expected return of the stock;
E(r) = SUM(prob * return)
E(r) = (0.35 * 0.15 ) + (0.65 * 0.07)
= 0.0525 + 0.0455
=0.098 or 9.8%
Next, use the variance formula to find the stock's standard deviation;
σ² = 0.35( 0.15 - 0.098)² + 0.65( 0.07 - 0.098)²
σ² = 0.0009464 + 0.0005096
σ² = 0.001456
As a percentage, it becomes; 0.001456 *100 = 0.1456%
The variance is therefore 0.1456%
Find standard deviation;
Standard deviation = SQRT (0.001456)
STDEV = 0.03816 or 3.82%
Explanation:
Financial markets limit access to capital in times of inflation to ease the market. Limit access to capital means that it becomes harder for companies to borrow capital. The interest rate is also increased. This limitation to access capital results in a slowdown of the growth of an economy and further results in increased unemployment rate.
When firms are not able to borrow money for their investments, their growth slows down and in a recession they are forced to layoff workers which results in an increase in unemployment rate. Decrease in the over production in an economy slows down the economic growth of the economy.