Consider the following sample of observations on coating thickness for low-viscosity paint. 0.83 0.88 0.88 1.03 1.09 1.12 1.29 1.31
1.39 1.49 1.59 1.62 1.65 1.71 1.76 1.83
Assume that the distribution of coating thickness(a normal probability plot strongly supports this assumption).
A. Calculate a point estimate of the value that separates the largest 10% of all values in the distribution from the remaining 90%.
B. Estimate P(X < 1.4), i. e., the proportion of all thickness values less than 1.4.

69

step-by-step explanation:

answer is because 4×10=40

and 98×4= is 392

40,392

a) at most means it can cost $12 or less

so the inequality sign would be ≤

you would then need to multiply the number of toppings by the 0.35 for each one and add it to the cost of the cheese pizza.

the equation would be 9.99 + 0.35x ≤ 12

b) using the above equation:

9.99 + 0.35x ≤ 12

subtract 9.99 from each side:

0.35x ≤2.01

divide both sides by 0.35:

x ≤ 2.01 / 0.35

x ≤5.74

at most you could have 5 toppings.

the 5 topping pizza would cost: 0.35 x 5 = 1.75 + 9.99 = $11.74