In a market research survey of 2982 motorists, 291 said that they made an obscene gesture in the previous month. Complete part a & b below. a. If 1 of the surveyed motorists is radomly selected, what is the probability that this motorist did not make an obscene gesture in the previous month?

The probability is .9024 (Round to four decimal places as needed.)

b. If 30 of the surveyed motorists are randomly selected without replacement, what is the probability that none of them made an obscene gesture in the previous month? Should the 5% guideline be applied in this case? Select the correct choice below and fill in the answer box within your choice.

(Round to four decimal places as needed.)

A. The probability is . The 5% guideline should be applied in this case.

B. The probability is . The 5% guideline should not be applied in this case.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

the correct answer is

c. 4

step-by-step explanation:

the given polynomial is

the degree of the polynomial is the highest exponent which is 4.

the -4 is called the leading coefficient.

this polynomial has only one term so it is a monomial.

the correct answer is option c.

whatvare the choices

step-by-step explanation:

answer: the correct answer is -32

step-by-step explanation: