To formulate a system of equations for Naomi and Hudson, who work at a dry cleaners where Naomi can iron 35 shirts per hour and Hudson can manage 20 shirts per hour, we know that together they worked 13 hours and completed a total of 395 shirts. Naomi, during her 13 hours, could potentially iron 455 shirts (13 x 35), meaning each hour Hudson worked lessens that number by 15 shirts. The difference of 60 shirts (455 - 395) indicates that Hudson worked for 3 hours and Naomi, therefore, for 10 hours. The resulting equation reflects this relationship: 35Y + 20X = 395.
Simple interest calculation
i = prt
where i represents the interest earned, p is the principal (the initial amount invested), r indicates the annual interest rate, and t stands for the duration in years.
i = prt
i = 8700 * 0.03 * 7
i = 1827
Answer: B. $1827
Answer:
Detailed explanation:
The sample consists of only 20 individuals, which is insufficient. A minimum of 30 is recommended for a sample size.
Also, the ideal maximum size should not exceed 10% of the total population. Calculating it gives us,
10/100 × 500 = 50
So, this criterion is satisfied.
Thus, the condition not satisfied for inference is that
The sample size must be large enough to presume normality in the distribution of the sample means.
The appropriate choice is
A. II only
