Amanufacturing firm claims that the batteries used in their electronic games will last an average of 30 hours. to maintain this average,16 batteries are tested each month. if the computed t value falls between t−0.025 and t0.025, the firm is satisfied with its claim. a. find the p(x¯) using excel. b. try to estimate the value of p(x¯ > 30) using t table.

the answer

b. they are parallel and will never intersect.

answer: howdy

step-by-step explanation:

da freeck kinda math is this just drop out

step-by-step explanation:

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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