HomeworkLib
Question

A child, (and mathematical genius!) wishes to estimate the variability in the number of candies he can collec...

A child, (and mathematical genius!) wishes to estimate the variability in the number of candies he can collect from houses during trick-or-treating.

He randomly selects a sample of 20 houses, and records the number of candies he gets at each:
# Candies   # Houses
0
1
2
3
4		 2
9
3
3
3

Find the sample variance he calculates using this data.

Problem #7:

Round answer to 2 decimals.
math   Statistics-And-Probability   
1 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The sample variance should be as follows:

Sampte oariane, SL and X Xf, whire NO N 30 elao ses and k n the no Df Kifi (x-R fi plere 6.48 5.76 ఈత -12 2 Da 4.32 030 s6 14

0 0
Add a comment
Know the answer?
Add Answer to:
A child, (and mathematical genius!) wishes to estimate the variability in the number of candies he can collec...
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

  • 2 16. A real estate agent wishes to estimate the mean number of days on the...

    2 16. A real estate agent wishes to estimate the mean number of days on the market of all houses sold in the last two years in Mecklenburg County. To do so, he examines the sales data of fifty randomly selected houses sold in that period. The population of interest to the agent is: → (a) All houses sold in Mecklenburg County in the last two years. (b) All houses sold that were not in the sample. (c) The fifty...

  • The director of a hospital wishes to estimate the mean number of people who are admitted...

    The director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room during a 24-hour period. The director randomly selects 64 different 24-hour periods and determines the number of admissions for each. For this sample, sample mean is 19.5 and standard deviation is 25. Estimate the mean number of admissions per 24 hours period with 90% confidence interval.

  • The director of a hospital wishes to estimate the mean number of people who are admitted...

    The director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room during a 24-hour period. The director randomly selects 36 different 24-hour periods and determines the number of admissions for each. For this sample, sample mean = 16.2. It is known that the number of admissions follow a normal distribution with 0 =4. Estimate the mean number of admissions per 24-hour period with a 90% confidence interval O 16.2 + -...

  • U Question 5 4 pts The director of a hospital wishes to estimate the mean number...

    U Question 5 4 pts The director of a hospital wishes to estimate the mean number of people who are ditted to the emergency room during a 24-hour period. The director randomly selects 36 different 24-hour periods and determines the number of admissions for cach. For this sample, sample mean I 16.2. It is known that the number of missions follow a normal distribution with o-4. Estimate the mean number of admissions per 24-hour period with a 90% confidence interval....

  • . Bob is the owner of Nale’s Texaco Gas Town and he would like to estimate...

    . Bob is the owner of Nale’s Texaco Gas Town and he would like to estimate the mean number of litres (L) of gasoline sold to his customers. Assume that the number of litres sold follows the normal distribution with a standard deviation of 8 L. From his records, he selects a random sample of 65 sales and finds the mean number of litres sold is 45. (3 marks) 1) Develop a 80% confidence interval for the population mean. (include...

  • ANSWER ALL PARTS. 2. An auditor wishes to sample sick-leave records of a large firm in...

    ANSWER ALL PARTS. 2. An auditor wishes to sample sick-leave records of a large firm in order to estimate the total number Ty of sick-leave days taken by employees over the past quarter. The firm has eight divisions with the following numbers of employees Division i123 45678 Ti 1200 450 2100 860 2840 1910 390 3200 The auditor selects two divisions with replacement with probability proportional to the num ber of employees (a) (4 marks). Briefly describe how a sample...

  • 1) A high school principal wishes to estimate how well his students are doing in math....

    1) A high school principal wishes to estimate how well his students are doing in math. Using 40 randomly chosen tests, he finds that 77% of them received a passing grade. Create a 99% confidence interval for the population proportion of passing test scores. Enter the lower and upper bounds for the interval in the following boxes, respectively. You may answer using decimals rounded to four places or a percentage rounded to two. Make sure to use a percent sign...

  • Hope you can answer them, thank you QUESTION 13 Your client has a gut feeling (she...

    Hope you can answer them, thank you QUESTION 13 Your client has a gut feeling (she uses the force) that the average house price in Lincoln Dark is $450K. You decide to use the previously collected data. Your sample size is 25 houses. The average based on the sample is $500K. The sample standard deviation is $100K. Test the hypothesis that the average house price in Lincoln Dark is $450K against the alternative that it is not. Use alpha 10%....

  • Question 1 A study was conducted to estimate μ, the mean number of weekly hours that...

    Question 1 A study was conducted to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. A similar study conducted a year earlier estimated that μ, the mean number of weekly hours that U.S. adults use computers at home,...

  • A friend of mine likes to eat peanut M&M’s. Each morning he randomly selects a number...

    A friend of mine likes to eat peanut M&M’s. Each morning he randomly selects a number of Peanut M&M’s between 1 and 12 to eat during the day from a bag which originally contained 100 Peanut M&M’s.(Hint: Looks like a randi(12) might be used here!). The question is on what day will my friend have to open a new bag of M&M’s for his daily habit. That means that if on day t the last M&Ms are eaten, then on...

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