# Statistics

. Two thousand randomly selected adults were asked whether or not they have ever shopped on the internet. The following table gives a two-way classification of the responses obtained.
Have shopped Have never shopped
Male 500 700
Female 300 500
Suppose one adult is selected at random from these 2000 adults. Find the following probabilities
a) P(has never shopped on the Internet and is a male)
b) P(has shopped on the Internet and is a female)

1. 👍
2. 👎
3. 👁
4. ℹ️
5. 🚩
1. A) 0,35
B) 0,15

1. 👍
2. 👎
3. ℹ️
4. 🚩
2. 0,35

1. 👍
2. 👎
3. ℹ️
4. 🚩
3. a. 7/12

b. 3/8

1. 👍
2. 👎
3. ℹ️
4. 🚩

## Similar Questions

1. ### math/probability

According to Masterfoods, the company that manufactures M&M’s, 12% are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. Round your answers to three decimal places. a) Compute the probability

2. ### Statistics

The body temperatures of adults are normally distributed with a mean of 98.6 degree F and a standard deviation of 0.60 degree F. If 36 adults are randomly selected, find the probability that their mean body temperature is greater

3. ### stat

for randomly selected adults, IQ scores are normally distributed with a standard deviation of 15. the scores of 14 randomly selected college students are listed below. use a 0.10 significance level to test the claim that the

4. ### Economics (36)

For borrowers with good credit scores, the mean debt for revolving and installment accounts is \$15,015 (BusinessWeek, March 20, 2006). Assume the standard deviation is \$3,730 and that debt amounts are normally distributed. a. What

1. ### math (stats)

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal places, for

2. ### Statistics

The percentage of adults who have been told at some point that they have hyptertension is 23.53%. If 10 adults are randomly selected, what is the probability that at least 8 have been told that they have hypertension?

3. ### precal

For students are randomly selected from a class of 25 to answer questions from reading assignment. In how many ways the four be selected if order does not matter? 25C4 = 12,650 In how many ways can the four be selected if they are

4. ### math

8 basketball players are selected to play in a special game.the players will be selected from a list of 27 players .if the players are selected randomly ,whats the probability that the 8 tallest players will be selected.

1. ### mathematics

Town officials want to estimate the number of households that own a dog. Answer the following. (a) Which of the following surveys probably would best represent the entire population of households? A. 20 households with a front

2. ### STATISTICS

the percentage of adults who have at some point in their life been told that they have hypertension is 23.53%. If 8 adults are randomly selected, find the probability that between 2 and 4 of then inclusive have been told that they

3. ### statistics

A Gallup poll of 1236 adults showed that 12% of the respondents believe that it is bad luck to walk under a ladder. Consider the probability that among 30 randomly selected people from 1236 who were polled, there are at least 2

4. ### math

In a large population of adults, the mean IQ is 112 with a standard deviation of 20. Suppose 200 adults are randomly selected for a market research campaign. The probability that the sample mean IQ is greater than 110 is...?