Confidence interval is given by the formula
x ⁺/₋ z* ( σ/ (√n) )
Where:
x = the sample mean = 130
z* = the z-value for 90% confidence = 1.645
σ = standard deviaton = 7
n = sample size = 145
Substituting these values into the formula gives:
130 ⁺/₋
130 ⁺/₋ 0.956
So the interval is in between (130 - 0.956) and (130 + 0.956)
Total eaten pizza = 2/8 + 3/8 = 5/8
Left pizza = 1 - 5/8 = 3/8
In short, Your Answer would be 3/8
Hope this helps!
p(x) × q(x)
= (3x² - x + 1) × (2x² + 3x - 2)
= 6x⁴ + 9x³ - 6x² - 2x³ - 3x² + 2x + 2x² + 3x - 2
= 6x⁴ + 7x³ - 7x² + 5x - 2
First, only graph's a and b are linear, meaning the change in each step is the same. This eliminates graphs c and d, which are both exponential.
Next, we need to determine which graph is a negative relationship. In a negative relationship, small values of x mean large values of y and large values of x mean small values of y; this also means the slope is negative. This means graph b has all the properties we're searching for.
Answer:
1485 are likely to be infected.
Based on the sample, the probability of an elk being infected is 11/50. Multiply this by the number of elk:
11/50(6750) = 1485.