Answer:
Step-by-step explanation:
This is a binomial probability problem. There are only two outcomes. It is either a chosen person has immunity to a particular disease or he does not. The probability of success in this case, p is the probability that a chosen person has immunity to a particular disease. Thus
p = 0.6
The probability of failure, q is q = 1 - p
Thus, q = 1 - 0.6 = 0.4
Mean = np
Where n represents sample size. Thus,
Mean = 12 × 0.6 = 7.2
Answer:
-5.82
Possible by long devison and the rule that if there is one negitive then the answer is negitive
Answer:
Initial value for store A = 300$
Initial value for store B = 200$
Explanation: The initial value is the value of y, when x is 0. Here the x axis will represent the month, while y would represent the amount the buyer owes on that month. For store A, at month 0, the buyer owes 300$. For store B, there is an instant payment of 100$, leaving the buyer to owe 200$ from the start of the deal, hence the reason for my initial values above.
Step-by-step explanation:
Rate of Change for store A = 300 - 250 = 50
Rate of change for Store B = 50
The rate of change in this case is the same, as the rate of change is defined as how fast the output change in relation to the input. In both cases, they are required to pay 50$ each month.
Answer:
Step-by-step explanation:
Given that a statistics teacher taught a large introductory statistics class, with 500 students having enrolled over many years.
Mean = 78 and std dev =10
Next time, sample size n was reduced to 25
For smaller sample size the mean was found to be = 83
The teacher wanted to know if teaching a smaller class was more effective and students performed better
ie comparison of two means of two samples should be done with different sample sizes but same teacher.
Hence hypothesis should be:
where x denotes the I sample and Y the second with 25 students.
Triangle ABE is isosceles / Given
AB congruent to AE / Def isosceles
angle ABE congruent to angle AEB / Property of isosceles triangles
angle ABD congruent to angle AEC / Subst different name for same angles
BD congruent to EC / Given
triange ABD congruent to triange AEC / Side Angle Side
