In a survey conducted with 1000 individuals (350 of whom were aged 20 or under, and 650 over age 20), they were questioned, "Which kind of takeaway food do you prefer – unhealthy or nutritious? The results were: Calculate chi-square X²Note :Ages <= 20Ages > 20eijcount (ai) * count (bj)n225350=unhealthyExpected value eij is calculated using the following equation125300nutritiouscount (rowi) * count (column)) row total column totalnoveral total

Survey results:Age/preferenceUnhealthyNutritiousAges <=20225125Ages>20350300

In a survey conducted with 1000 individuals (350 of whom were aged 20 or under, and 650 over age 20), they were questioned, "Which kind of takeaway food do you prefer – unhealthy or nutritious? The results were:

In a survey conducted with 1000 individuals (350 of whom were aged 20 or under, and 650 over age 20), they were questioned, "Which kind of takeaway food do you prefer – unhealthy or nutritious? The results were:

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Consider the different contexts: a population, one sample, and a collection of all possible sample means. To distinguish between the three different contexts: (a) What measures the average distance between an observation in a sample of size n and the center of that sample? a.a b. o C.S d. aN(n) (b) What measures the average distance between an observation in a population and the center of that population? a. a b. O C. S d. aN(n) (c) What measures the average distance between a sample mean x and the center of all sample means of the same size n? a. a b. o C. S d. a (n) (d) What measures the average distance between the height of an individual in a population and the mean height of the population? a. a b. o С. S d. av(n)
There’s two part to this question. It has parts A-E.
1. Fill in the blanks for each of the statements below. а. A survey of 1000 U.S. adults found that 40% think the internet is the best way to get news and information. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the 40% a parameter or statistic, and why? b. A survey of the 55 law firms in a local city found that the average hourly billing rate is $425. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the $425 a parameter or statistic, and why?.
I need help with #2, part F.
The Ice Chalet offers dozens of different beginning iceskating classes. All of the class names are put into a bucket. The 5 P.M., Monday night, ages 8 to 12, beginning ice-skating class was picked. In that class were 66 girls and 14 boys. Suppose that we are interested in the true proportion of boys, ages 8 to 12, in all beginning ice-skating classes at the Ice Chalet. Assume that the children in the selected class are a random sample of the population. state the estimated distribution of x x~ (____,____)
What conclusions do you reach from this chart? A. There is an approximately equal percentage of males and females who enjoy shopping for clothing. B. There is a higher percentage of males who enjoy shopping for clothing. C. There is a higher percentage of females who enjoy shopping for clothing. D. The side-by-side bar chart is inconclusive. O A. Yes- No- 0. 100 200 300 400 Frequency Male C Female
1.The Prevalence of having health insurance (as a decimal) for 1 (Table 4 box b. above) is: 2. The Prevalence of having health insurance (as a decimal) for 2 (Table 4 box e. above) is: 3.The Prevalence of having health insurance (as a percentage) for 1 (Table 4 box c. above) is: 4.The Prevalence of having health insurance (as a Percentage) for 2 (Table 4 box f. above) is:
A magazine identified the following five "maintenance" activities often performed by people as summer approaches; 1. Prep the car for road trips; 2. Clean up the house or apartment; 3. Groom the garden; 4. Exercise the body; 5. Organize the wardrobe. The following data are the responses of 30 people who were asked, on June 1st, how many of the five they had accomplished. Complete parts (a) through (c) below. Click the icon to view the data. 0 O A. Frequency 1 2 3 4 5 14 6 13% 10% 7% 3% (b) Construct a histogram. Choose the correct graph below. 15- 12- 4 3 2 1 0 1 2 3 4 5 Activities Performed 47% 20% Q O B. Frequency 오오오오오오 0 1 2 3 4 5 Activities Performed Q Q Frequency SNSSO 15- Data Table 0 1 2 3 4 5 Activities Performed 1 4 3 0 0 1 Q 0 0 2 Print 0 1 4 1 3 0 Frequency 2 0 0 Full data set 0 0 2 1 20 300 5 0 1 Done 0 1 2 3 4 5 Activities Performed Q
A class of students each took a sample of 25 reeses pieces. These are their results: Orange Yellow Brown 17 7 7 15 8 2 11 7 7 7 8 10 14 4 7 13 7 5 15 4 6 11 6 8 13 7 5 7 4 14 14 4 7 Take a guess concerning the population proportion of orange candies. Is this the same as the proportion of orange candies from your original sample? Why or why not? Your origional sample is: Orange Yellow Brown 13 7 5 j) Create a 95% confidence interval for the population proportion of orange candies.Point estimate: ? from the class data Critical z value: Standard error:Margin of Error: Lower Bound:Upper Bound:Interpretation:k) Did your guess in…
Here are some summary statistics for the numbers of hectares of olives and apples harvested per region, for area that planted those crops. In Region A, there were 36 hectares of olives harvested and 18 hectares of Apples harvested. Relative to its crop, which plant had a better harvest? A: They had equally good harvests relative to their crops. B: The Olives. C: It’s impossible to say without seeing all of the harvest amounts. D: The Apples.
The table below shows the results of a survey in which 142 male and 145 female workers ages 25 to 64 were asked if they had at least one month's income set aside of emergencies.