We will use the following formula to work out the confidence interval
Upper limit = μ + z* (σ/√n)
Lower limit = μ - z* (σ/√n)
We have
μ = 79.3
σ = 7.8
n = 12
z* is the z-score for 95% confidence level = 1.96
Substitute these into the formula, we have
Upper limit = 79.3 + 1.96 (7.8/√12) = 83.7
Lower limit = 79.3 - 1.96 )7.8/√12) = 74.9
Answer:
B
Step-by-step explanation:
-2-(-4) = -2 + 4
B shows subtracting 2 to the left then adding 4 to the right.
Answer: = 2(7 + 3) ^2= 2 * 10^2= 200
Answer:
Rs 85
Step-by-step explanation:
Cost of 5kgs of rice = Rs 425
Cost of 1 kg of rice = 425/5
= Rs 85
So, the cost of a kg of rice is Rs 85
Answer:
By continuing my education I increased my earning potential from $21,484 to $39,746 a year. That's a difference of $18262 a year.
If the additional education costs $18,000, then in one year it will pay for itself.
