Smalltown elevator produces elevator rails. to meet specifications, an elevator rail must be between 0.995 inches and 1.005 inches in diameter. suppose that the diameter of an elevator rail follows a normal random variable with mean of 1 inch and standard deviation of 0.003 inches. rounded to the nearest one tenth of one percent, what fraction of all elevator rails will meet specifications?

90.5%

Step-by-step explanation:

Given: Mean :

Standard deviation :

The formula to calculate z is given by :-

For x= 0.995

The P Value =

For x= 1.005

The P Value =

In percent ,

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i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!