A researcher wanted to determine if babies were born at different rates in different months. Tracking...
A researcher wanted to determine if babies were born at different rates in different months. Tracking a random sample of birth records for one metropolitan area resulted in the following data. Use a chi-square critical value of 19.675.
|
Jan |
Feb |
Mar |
Apr |
May |
June |
July |
Aug |
Sept |
Oct |
Nov |
Dec |
|
|
Observed |
14 |
12 |
12 |
10 |
16 |
9 |
16 |
11 |
21 |
8 |
24 |
9 |
- What are the null and alternate hypothesis for this test?
- What is the expected number of babies for each month? Report as a decimal, if applicable.
- Calculate the chi-square statistic. Show your work for at least one cell calculation and the final statistic.
- Write a complete conclusion citing your statistics.
Homework Answers
a)
Null hypothesis: Babies are born uniformly in all 12 months
ALternate hypothesis Ha: Babies are not born uniformly in all 12 months
b)
expected value =np=162*(1/12) =13.5
c)
| applying chi square goodness of fit test: |
| relative | observed | Expected | residual | Chi square | |
| category | frequency(p) | Oi | Ei=total*p | R2i=(Oi-Ei)/√Ei | R2i=(Oi-Ei)2/Ei |
| Jan | 1/12 | 14.000 | 13.500 | 0.14 | 0.019 |
| Feb | 1/12 | 12.000 | 13.500 | -0.41 | 0.167 |
| Mar | 1/12 | 12.000 | 13.500 | -0.41 | 0.167 |
| Apr | 1/12 | 10.000 | 13.500 | -0.95 | 0.907 |
| May | 1/12 | 16.000 | 13.500 | 0.68 | 0.463 |
| Jun | 1/12 | 9.000 | 13.500 | -1.22 | 1.500 |
| Jul | 1/12 | 16.000 | 13.500 | 0.68 | 0.463 |
| Aug | 1/12 | 11.000 | 13.500 | -0.68 | 0.463 |
| Sep | 1/12 | 21.000 | 13.500 | 2.04 | 4.167 |
| Oct | 1/12 | 8.000 | 13.500 | -1.50 | 2.241 |
| Nov | 1/12 | 24.000 | 13.500 | 2.86 | 8.167 |
| Dec | 1/12 | 9.000 | 13.500 | -1.22 | 1.500 |
| total | 1.000 | 162 | 162 | 20.222 |
| test statistic X2 = | 20.222 | |
d)
as test statistic is higher than critical value we reject null and conclude that babies were born at different rates in different months.
Add Answer to:
A researcher wanted to determine if
babies were born at different rates in different months. Tracking...
5. In many sports, children born in the early months of the leader varet noticed by...
5. In many sports, children born in the early months of the leader varet noticed by their coaches beca of the superiority they demonstrate due to their name. The following table give the position to all Canadian players born since 1951 in the National Law (NHL) given the player's birth month (Data from Addona, V., and Yates P.A (2010) Fffert in the National A Look at the Relative Age Effect in the a Hockey League," Journal of Quantitative Analysis in...
Finance Question: Confused about different ways to calculate Returns. I'm supposed to take all of the...
Finance Question: Confused about different ways to calculate
Returns. I'm supposed to take all of the values ( i assume of which
are returns for these index and make three new series for 12-month
rolling annual returns. What does 12 month rolling annual returns
mean mathematically? like return from Dec '17 divided by Dec '16
then next value would be Jan '17/Jan'16 and so
on?
Date Jan-16 MSCI US MOM -3.69 -1.31 5.28 -0.65 2.47 3.00 2.69 -1.45 0.50 Feb-16...
The monthly sales for Yazici Batteries, Inc. were as follows: Month Jan 20 Feb 21 Mar...
The monthly sales for Yazici Batteries, Inc. were as follows: Month Jan 20 Feb 21 Mar 16 Apr May 15 13 Jun 18 Jul 15 Aug Sept Oct Nov Dec 18 19 22 202 This exercise contains only parts de b) The forecast for the next month (Jan) using the naive method = 24 sales (round your response to a whole number) The forecast for the next period (Jan) using a 3-month moving average approach = 22 sales (round your...
A highway department executive claims that the number of fatal accidents which occur in her state...
A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 171 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Fatal Accidents Jan 13 Feb Mar 11 16 Apr May Jun 12 14 21 Jul 11 Aug 7 Sep 11 Oct 10 Nov 23 Dec...
I need help on the trial balance its not balancing. transactions are shown below. Note that...
I need help on the trial balance its not balancing.
transactions are shown below. Note that you and your partner will receive a salary of $7,500 per month each her have just begun a new firm that you have entitled } roduct, which is month beginning in January. You sell one itThe of $400.c. ou sell 100.000 shares of $1 per. common stock to yourset and your partner (200,000 shares total) for Jan 2- Office equipment is purchased for $36,000...
MUST SHOW ALL CELL FORMULAS Required: You need to prepare a comprehensive 12-month budget, including supporting...
MUST SHOW ALL CELL FORMULAS
Required: You need to prepare a comprehensive
12-month budget, including supporting schedules and a report for
the period January 1, 2020 to December 31, 2020 for Hedron,
Inc.
INFORMATION FOR HEDRON, INC.
Hedron, Inc. is a company that re-sells one product, a
particularly comfortable lawn chair. An overseas contractor makes
the product exclusively for Hedron, so Hedron has no manufacturing
related costs.
PRODUCT COSTS
In Nov of 2019, each lawn chair costs
Hedron $4 per...
Partial payments are made on the dates indicated. Use the United States rule to determine the...
Partial payments are made on the dates indicated. Use the United States rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. Effective Partial Payment Maturity Principal Date Amount Date Date $1900 19% Sept. 1 $500 Oct. 1 Dec. 1 $500 Nov. 1 Click the icon to view a table of the number of the day of the...
Modify the code, so that it will check the various user inputs for validity (e.g., months...
Modify the code, so that it will check the various user inputs for validity (e.g., months being between 1 - 12), - if invalid value was entered, ask user to enter a new (& correct) value, - check to see if new value is valid - if valid allow the user to continue. - if still not valid repeat this process, until valid value is entered __________________________________________________________________________________________________ QUESTION: Desc: This program creates a painting order receipt. Ask for the following...
The following account balances were included in Bromley Company’s balance sheet on December 31, 2018: Land...
The following account balances were included in Bromley Company’s balance sheet on December 31, 2018: Land $100,000 Land improvements 20,000 Buildings 300,000 Machinery and Equipment 500,000 During 2019, the following transactions occurred: Jan. 1 Land was acquired for $70,000 for a future building site. Commissions of $4,000 were paid to a real estate agent. Feb. 1 A factory and land were acquired from Kent Development Company by issuing 20,000 shares of $3 par common stock. At that time, the stock...
On January 1, 20X7, Jacqueline Fernandez formed a corporation to purchase wheat harvesting equipment and provide...
On January 1, 20X7, Jacqueline Fernandez formed a corporation to purchase wheat harvesting equipment and provide contract support services to farmers throughout the Midwest. Information about the first year of operation follows:[1] Jan. 1 Investors provided $2,500,000 of cash in exchange for stock of Fernandez Corporation Jan. 1 Purchased combines and trucks in exchange for $1,000,000 cash and a $3,000,000 note payable Feb. 7 Purchased $40,000 of supplies on account that will be needed during the upcoming harvest Mar. 3 Paid...
5. In many sports, children born in the early months of the leader varet noticed by their coaches beca of the superiority they demonstrate due to their name. The following table give the position to all Canadian players born since 1951 in the National Law (NHL) given the player's birth month (Data from Addona, V., and Yates P.A (2010) Fffert in the National A Look at the Relative Age Effect in the a Hockey League," Journal of Quantitative Analysis in...
Finance Question: Confused about different ways to calculate
Returns. I'm supposed to take all of the values ( i assume of which
are returns for these index and make three new series for 12-month
rolling annual returns. What does 12 month rolling annual returns
mean mathematically? like return from Dec '17 divided by Dec '16
then next value would be Jan '17/Jan'16 and so
on?
Date Jan-16 MSCI US MOM -3.69 -1.31 5.28 -0.65 2.47 3.00 2.69 -1.45 0.50 Feb-16...
The monthly sales for Yazici Batteries, Inc. were as follows: Month Jan 20 Feb 21 Mar 16 Apr May 15 13 Jun 18 Jul 15 Aug Sept Oct Nov Dec 18 19 22 202 This exercise contains only parts de b) The forecast for the next month (Jan) using the naive method = 24 sales (round your response to a whole number) The forecast for the next period (Jan) using a 3-month moving average approach = 22 sales (round your...
A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 171 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Fatal Accidents Jan 13 Feb Mar 11 16 Apr May Jun 12 14 21 Jul 11 Aug 7 Sep 11 Oct 10 Nov 23 Dec...
I need help on the trial balance its not balancing.
transactions are shown below. Note that you and your partner will receive a salary of $7,500 per month each her have just begun a new firm that you have entitled } roduct, which is month beginning in January. You sell one itThe of $400.c. ou sell 100.000 shares of $1 per. common stock to yourset and your partner (200,000 shares total) for Jan 2- Office equipment is purchased for $36,000...
MUST SHOW ALL CELL FORMULAS
Required: You need to prepare a comprehensive
12-month budget, including supporting schedules and a report for
the period January 1, 2020 to December 31, 2020 for Hedron,
Inc.
INFORMATION FOR HEDRON, INC.
Hedron, Inc. is a company that re-sells one product, a
particularly comfortable lawn chair. An overseas contractor makes
the product exclusively for Hedron, so Hedron has no manufacturing
related costs.
PRODUCT COSTS
In Nov of 2019, each lawn chair costs
Hedron $4 per...
Partial payments are made on the dates indicated. Use the United States rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. Effective Partial Payment Maturity Principal Date Amount Date Date $1900 19% Sept. 1 $500 Oct. 1 Dec. 1 $500 Nov. 1 Click the icon to view a table of the number of the day of the...
Most questions answered within 3 hours.
-
A sample of size 31 will be drawn from a population with mean 39
and standard...
asked 14 minutes ago -
What is the effect on the P-value when a test is changed from a
two-tailed hypothesis...
asked 18 minutes ago -
I wish to estimate µ, the mean of a population. After I collect
and an-
alyze...
asked 47 minutes ago -
At a local university, you poll a group of 115 students and find
that 37 of...
asked 28 minutes ago -
Gladstone company tracks the number of units purchased and sold
throughout each accounting period but applies...
asked 31 minutes ago -
When determining if a molecule's configuration is E or Z, what
determines the higher priority groups?
asked 35 minutes ago -
13. What is the amount
of conversion cost transferred to finished goods? (Round
your intermediate calculations...
asked 37 minutes ago -
Sulfuric Acid is a "strong" acid, but only releases a single
proton when it dissolves. What...
asked 37 minutes ago -
The
second floor of a house is 6 m above the street level. How much
work...
asked 39 minutes ago -
What uncontrollable factor(s) contributed to Hong Kong Disney’s
poor performance during its first year?
asked 40 minutes ago -
You are interested in whether students that have a male
instructors perform differently on exams. To...
asked 53 minutes ago -
Discuss the following: The policies that promote economic
growth. Why are some countries more developed than...
asked 49 minutes ago