The time to complete a standardized exam is approximately normal with a mean of 70 minutes & a standard deviation of 10 minutes. using the 68-95-99.7 rule, if students are given 90 minutes to complete the exam, what percentage of students will not finish? . a. 32%. b. 5%. c. 2.5%. d. 0.0015%. show step-by-step solution.

Option C) 2.5%

Step-by-step explanation:

We are given the following information in the question:

The distribution of time to complete a standardized exam is approximately normal.

The students are given 90 minutes to complete the exam.

Around 95% of the students will fall in this interval .

Around 5% will not fall into this interval.

Thus, around 2.5% of the students will not be able to complete their test in 90 minutes.

We considered 2.5% only because the remaining 5% of students would lie on both sides of the mean. Our requirement was only to calculate students who would not be able to complete test even in 9- minutes so we divided this percentage by 2.

the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.

x-3y=4

step-by-step e