Answer:
20 tea bags
Step-by-step explanation:
if 5 is 1 gallon then you do 5x4=20
Answer: He can predict that 420 students will be in support of the purchase.
Step-by-step explanation:
Since Randy surveyed one student out of every 5 he came across in the cafeteria, it means that if he came across five people, he will survey one, if he came across ten students, he will survey 2 and so on.
If then he surveyed a total of 140 students, then we can actually multiply the number by 5 to know the exact number of students he possibly came across in the cafeteria:
= 140 × 5
= Total of 700 students
If 84 out of the surveyed students supported the purchase, we can find what that figure represents in the total number of students in the cafeteria:
84/140 = x/700
We cross multiply
140 × X = 84 × 700
140X = 58,800
X = 58,800/140
X = 420 students
Therefore, he can predict that 420 students out of a total of 700 students in the cafeteria will be in support of the purchase of the P.E equipment
Option D : 54 is the range of the distribution
Explanation:
The given distribution is 21, 32, 49, 67, 75
The range of the distribution is the difference between the highest value and the lowest value in the distribution.
From the given data, we can see that,
Highest value = 75
Lowest value = 21
The range can be determined by subtracting by the highest value and the lowest value.
Thus, we have,
Range = Highest value - Lowest value
Range = 75 - 21
Range = 54
Thus, the range of the given distribution is 54.
Hence, Option D is the correct answer.
Answer:
Step-by-step explanation:
it will take jocelyn 2 hours to make 120 cookies
Answer:
Population standard deviation, 
= 3683.063 .
Step-by-step explanation:
We are given that the width of the estimated confidence interval i.e. 99% is 600 and the sample size used in estimating the mean is 1000 which means ; n = 1000 and width = 600
We know that Width of confidence interval = 2 * Margin of error
<em> Margin of error</em><em> </em>= 
= 2.5758 * 
{because at 1% significance level
z table has value of 2.5758 .}
Therefore, 600 = 2 * 2.5758 *
⇒ = 
= 3683.063 .
Hence, the Population standard deviation = 3683.063 .
