1. at a local manufacturing plant, employees must complete new machine set ups within 30 minutes. new machine set-up times can be described by a normal model with a mean of 22 minutes and a standard deviation of four minutes.(a) what percent of new machine set ups take more than 30 minutes? (b) the typical worker needs ve minutes to adjust to their surroundings before beginning their duties. what percent of new machine set ups are completed within 25 minutes to allow for this?

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: