Question

7. A sample of college students were asked how much pizza they bought in a week....

7. A sample of college students were asked how much pizza they bought in a week. The results were put in a probability distribution table.

a) Find P (x = 4). Find P (x < 2).

b) Find the expected value of the number of pizzas in a week. Interpret the answer.

x

P (x)

0

0.10

1

0.34

2

0.23

3

0.15

4

0.18

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
7. A sample of college students were asked how much pizza they bought in a week....
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 3. How much TV do College Students watch? In a survey 361 students were asked how...

    3. How much TV do College Students watch? In a survey 361 students were asked how many hours of TV they watched per week. The sample gave an average of 6.504 hours. A bootstrap distribution gave a SE of 0.2939. Find and interpret a 90% confidence interval for the average number of hours a student watches TV per week.

  • A sample of college students was asked how much they spent monthly on pizza. Approximate the...

    A sample of college students was asked how much they spent monthly on pizza. Approximate the standard deviation for the cost. Monthly pizza cost ($) Number of students 10.00-19.99 20.00-29.99 30.00-39.99 40.00-49.99 50.00-59.99 The sample standard deviation for the cost is $1(Round to the nearest cent as needed.)

  • A sample of college students was asked how much they spent monthly on pizza. Approximate the...

    A sample of college students was asked how much they spent monthly on pizza. Approximate the standard deviation for the cost. Monthly pizzapizza cost​ ($) Number of students ​10.00-19.99 9 ​20.00-29.99 14 ​30.00-39.99 26 ​40.00-49.99 15 ​50.00-59.99 5 The sample standard deviation for the cost is ​(Round to the nearest cent as​ needed.)

  • A sample of 200 college students are asked about how much time they spend studying for...

    A sample of 200 college students are asked about how much time they spend studying for classes each week. The results show that the sample has a mean of 15 hours with a standard deviation of 5 hours. Explain these findings for someone who has never taken a statistics class before. Note that your job is to interpret the findings, NOT to explain how they were calculated! (10 points)

  • A recent survey asked college students how much time they spend studying each week. The results...

    A recent survey asked college students how much time they spend studying each week. The results showed a mean of 10 hours with a standard deviation of 2 hours. Complete parts (a) through (c) below. (a) Find the probability that a randomly selected student would spend less than 7 hours studying per week. O A. 0.933 OB. 0.500 OC. 0.067 OD. 0.333 (b) What percent of students spend more than 12 hours studying per wook? O A. 80.0% OB. 15.9%...

  • part a: The following data were obtained from a survey of college students. The variable X...

    part a: The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months. x 0 1 2 3 4 5 P (X=x) 0.20 0.25 0.20 0.15 0.10 0.10 Find P( X > 1) A. 0.80 B. 0.20 C. 0.55 D. 0.45 part b: The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during...

  • A random sample of 15 college students were asked "How many hours per week typically do...

    A random sample of 15 college students were asked "How many hours per week typically do you work outside the home?" Their 13 responses are shown on the right 31 13 Determine the shape of the distribution of hours worked by drawing a frequency histogram and computing the mean and median 18 Which measure of central tendency better describes hours worked? 16 18 25 28 20 24 15 Choose the correct frequency histogram below Hours Worked per Week OA Hours...

  • A random sample of students from a commuter college were surveyed and asked about their employment...

    A random sample of students from a commuter college were surveyed and asked about their employment status. The results are recorded in the table below. Test the claim that the frequencies are evenly distributed throughout the categories. Use α = .05 . # Hours per week 0-9 10-19 20-29 30-39 40+ Number of students 28 15 19 22 24 Find the value of the test statistic. (Round to the nearest ten-thousandth.)

  • A group of 74 college students from a certain liberal arts college were randomly sampled and asked about the number of a...

    A group of 74 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the mean number of alcoholic drinks that students at his...

  • A group of 43 college students from a certain liberal arts college were randomly sampled and asked about the number of a...

    A group of 43 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the mean number of alcoholic drinks that students at his...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT