ZuoTi.Pro
Question

The following data set represents the number of NBA games in January 2016, watched by 10...

The following data set represents the number of NBA games in January 2016, watched by 10 randomly selected student in STAT 206. 7, 0, 4, 2, 2, 1, 0, 1, 2, 3 (a) What is the sample mean? (b) Calculate sample variance. (c) Estimate the mean number of NBA games watched by a student in January 2016. (d) Estimate the standard error of the estimated mean.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

(a)

Sample mean = ar{x} = 22/10 = 2.2

(b)

x x - ar{x} (x - ar{x} )2
7 4.8 23.04
0 - 2.2 4.84
4 1.8 3.24
2 - 0.2 0.04
2 - 0.2 0.04
1 - 1.2 1.44
0 - 2.2 4.84
1 - 1.2 1.44
2 - 0.2 0.04
3 0.8 0.64
Total = 39.6

Sample variance = 39.6/9 = 4.4

(c)

Mean number = 2.2

(d)

Standard deviation = s = V4.4- 2.0976

Standard error = s/sqrt{n}

= 2.0976/V10 = 0.6633

0 0
Add a comment
Know the answer?
Add Answer to:
The following data set represents the number of NBA games in January 2016, watched by 10...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • 26 randomly selected students were asked the number of movies they watched the previous week. The...

    26 randomly selected students were asked the number of movies they watched the previous week. The results are as follows: # of Movies 0 1 2 3 4 Frequency 5 6 7 5 3 Round all your answers to 4 decimal places where possible. The mean is: ___ The median is: ___ The sample standard deviation is: ___ The first quartile is: ___ The third quartile is: ___ What percent of the respondents watched at least 2 movies the previous...

  • 20 randomly selected students were asked the number of movies they watched the previous week. The...

    20 randomly selected students were asked the number of movies they watched the previous week. The results are as follows: # of Movies 0 1 2 3 4 Frequency 4 5 6 1 4 Round all your answers to 4 decimal places where possible. The mean is:   The median is:   The sample standard deviation is:   The first quartile is:   The third quartile is:   What percent of the respondents watched at least 2 movies the previous week? % 75% of all...

  • 21 randomly selected students were asked the number of movies they watched the previous week. The...

    21 randomly selected students were asked the number of movies they watched the previous week. The results are as follows: 0 1 3 4 5 # of Movies Frequency 2 3 4 3 3 3 2 6 Round all your answers to 4 decimal places where possible. The mean is: The median is: The sample standard deviation is: The first quartile is: The third quartile is: What percent of the respondents watched at least I movies the previous week? %...

  • Use the data set here (Links to an external site.) for this question. The data set...

    Use the data set here (Links to an external site.) for this question. The data set contains a sample showing the number of times a website was visited/viewed in one day; each observation corresponds to one day. a) The point estimate for the mean number of website views is [ Select ] . b) The sample standard deviation is [ Select ] . c) Suppose that the sample mean equals the true mean. Suppose that website views follow a Poisson...

  • Random samples of players for two types of video games were selected, and the mean number...

    Random samples of players for two types of video games were selected, and the mean number of hours per week spent playing the games was calculated for each group. The sample means were used to construct the 90 percent confidence interval (1.5, 3.8) for the difference in the mean number of hours per week spent playing the games. The maker of one of the video games claims that there is a difference in the population mean number of hours per...

  • Question 9 5 pts Major League Baseball Games The following scatter plot shows the number of...

    Question 9 5 pts Major League Baseball Games The following scatter plot shows the number of home runs versus the number of attendance (in 1000 people) for some randomly selected games. Attendance and Runs for 11 Baseball Games. 6 8 10 Runs 2 4 O 20 30 40 -50 Attandance x1000) The following shows the output generated by a software for the least-square regression line using this data: Simple linear regression results: Runs - 1.020 +0.1590 Attendance Sample size: 11...

  • In the probability distribution to the? right, the random variable X represents the number of hits...

    In the probability distribution to the? right, the random variable X represents the number of hits a baseball player obtained in a game over the course of a season. x P(x) 0 0.1665 1 0.3356 2 0.2873 3 0.1481 4 0.0366 5 0.0259 (1) Compute and interpret the mean of the random variable X. (2) Which of the following interpretations of the mean is? correct? A. In any number of? games, one would expect the mean number of hits per...

  • The following data set represents a population of values:  3     15     9     11    7     15     3 The...

    The following data set represents a population of values:  3     15     9     11    7     15     3 The total deviation from the population mean for the data values is. QQQQ Given that a sample is approximately bell-shaped with a mean of 76 and a standard deviation of 2, the approximate percentage of data values that is expected to fall between 70 and 82 is 75 percent 99.7 percent 68 percent 95 percent QQQ The numbers of minutes spent by 20 students waiting...

  • please help with all. In the following probability distribution, the random variable x represents the number...

    please help with all. In the following probability distribution, the random variable x represents the number of activities a parent of a 6th-to 8th grade student is involved in. Complete parts (a) through (1) below. * 1 0 1 2 3 4 5 P(x) 0.269 0 206 0.224 0.239 0.062 (a) Verify that this is a discrete probability distribution This is a discrete probability distribution because the sum of the probabilities is and each probability is (6) Graph the discrete...

  • 2.5 Self-quiz Problem (Discrete Data). The number of shot blocks of a certain basketball player had...

    2.5 Self-quiz Problem (Discrete Data). The number of shot blocks of a certain basketball player had in 24 randomly selected games is given as follows; {1,2,2,2,2,1,3,4,2,1,3,1 5,2,1,3,0,1,4,4,3,3,5,2} (1) Construct a table that gives the frequency distribution of this data. (2) Construct a table that gives the relative frequency distribution of this data. (3) Construct a frequency histogram of this data. (4) Construct a relative frequency histogram of this data. (5) Construct a stem and leaf plot for this data set....

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