Factor the polynomial: 16h^2-18h-9

(8h+3) x (2h-3)

Step-by-step explanation:

Rewrite the expression, write -18 as a difference: 16h^2+6h-24h-9

Factor out 2h from the expression: 2h x (8h+3)-24h-9

Factor out -3 from the expression: 2h x (8h+3)-3(8h+3)

Factor out 8h+3 from the expression: (8h+3)x(2h-3)

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Solution :

Given :

mean weight of the dogs, = 69

Number of dogs, n = 37

Standard deviation, σ = 9.2

Confidence interval = 90%

At 90% confidence interval for the true population mean dog weight is given by :

= (66.5122, 71.4878)