All categories

2 years ago

In a market research survey of 2518 motorists, 252 said that they made an obscene gesture in the previous month.

Mathematics

1 answer:

Lelechka [254]2 years ago

4 0

Answer:

Probability is 89.99%

Step-by-step explanation:

divide 252 by 2518 and you get 10.01% but that represents the people who did make the gesture so instead you would minus 252 from 2518 and that would be 252 - 2518 = 2266 then you would divide 2266 by 2518 and you get 2266/2518 = 0.8999 which is equal to 89.99%

You might be interested in

Today only, a table is being sold for $279. This is 62% of its regular price. What was the price yesterday?

White raven [17]

Answer:

Step-by-step explanation:

5 0

2 years ago

For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp

Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

$\frac{1}{365}$

a) Probability that exactly 3 people have same birthday = $\frac{1}{365^3}$

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = $\frac{1}{365^3}$

Expected value of days = np = $\frac{1}{365^2}$

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0

3 years ago

Find the geometric mean between the pair of numbers 9 and 36

Degger [83]

Answer:18

Step-by-step explanation:

9/x = x/36

x^2 = 324

x=18

5 0

3 years ago

The clock below shows time that lance got home from school. 3:32. What time did he get home A: seventeen minutes before three B:

navik [9.2K]

Answer:

If Lance got home from school at 3:32 p.m. A and B both represent:

A: seventeen minutes before 3 would be before 3 o'clock even happens

B: 28 minutes before 4 would make more sense, since 3:32 is before 4 o'clock

Lance got home 28 minutes before 4

Hope this helps ;)

5 0

2 years ago

You need exactly 47 bottles of water. You don’t want to buy more than you need, but you want the least expensive way. List the b

Ber [7]

Answer: That would be 1 case + 112 pack + 16 pack + 5 singles

Step-by-step explanation:

8 0

2 years ago