Answer:
0.0323 = 3.23%. Is unusual
Step-by-step explanation:
Using the normal distribution we can find z value with the mean and standard deviation as follows. x is the value we want to know its probability
z = (x - mean)/standard deviation
z = (5-8.54)/1.91
z = -1.85
Using z tables for normal distribution, for z = 1.85, we have an area under the curve of 0.9677. Since we want to know the probability for 5 minutes or less, we have to substract from
p = 1- 0.9677
p = 0.0323
An event with a probability less than 5% is considered unusual.
Answer:
A
Step-by-step explanation:
Answer is the first choice. you can tell by the notation.
I first change the fraction into a decimal which give me 3.5. then plug it in and you'll get 21.991 meter. Hope that helps.:)
Answer:
Step-by-step explanation:
Area of a rectangle is length times width. Since a rectangle has four sides, there will be two sides that have the length size and two with the width. Anyway, now we need to find what numbers multiply together to make 35.
7 and 5 are the only whole numbers that multiply together to make 35, so those hve to be the length and width. So two sides opposite each other are going to be 7 cm and the other two are going to be 5 cm
